Circuit blocks

1. A device, comprising:

a corner section including an outer edge and an inner edge, opposite the outer edge, the corner section including a flexible, conductive material configured to be displaced in response to a force applied to the outer edge;

at least one additional section extending from the corner section;

at least one tab coupled to the at least one additional section and configured to electrically couple to a substrate; and

a retainer section opposite the corner section and configured to electrically couple to the substrate;

wherein the inner edge of the corner section, the at least one additional section, and the retainer section are configured to form an inner region configured to receive and retain a magnet.

2. The device of claim 1 , wherein the at least one tab comprises two solder tabs.

3. The device of claim 1 , wherein the corner section, the at least one additional section, the at least one tab, and the retainer section comprise a continuous piece of metal.

4. The device of claim 1 , wherein the corner section, the at least one additional section, and the at least one tab comprise a first piece of metal, and the retainer section comprises a second, different piece of metal.

5. The device of claim 1 , wherein the corner section includes a curved surface extending in a first direction and a second direction, the first direction substantially perpendicular to the second direction.

6. The device of claim 1 , the corner section including a curved section extending in at least two substantially perpendicular directions and including a flexible, conductive material.

7. The device of claim 1 , further comprising a circuit block including the corner section, the at least one additional section, the at least one tab, and the retainer section.

8. A device, comprising:

a circuit block including:

at least one electrically conductive post configured for coupling to at least one other circuit block;

a contact electrically coupled to the at least one electrically conductive post and including a corner section extending in at least two directions substantially perpendicular to a longitudinal axis of the at least one electrically conductive post; and

a magnet at least partially retained by the contact and configured to be positioned proximate the corner section of the contact, the magnet and the corner section configured to magnetically attract at least one other circuit block.

9. The device of claim 8 , wherein the at least one electrically conductive post comprises ferromagnetic material.

10. The device of claim 8 , further comprising a non-conductive frame coupled to the at least one electrically conductive post and including a portion proximate the contact, wherein an outer surface of the corner section of the contact is configured to project outwardly from the frame and beyond a peripheral surface of the frame.

11. The device of claim 8 , wherein the circuit block further comprises a frame coupled to the at least one electrically conductive post and including at least one non-conductive post configured for coupling to the at least one other circuit block.

12. The device of claim 8 , further comprising a substrate coupled to the at least one electrically conductive post and having a major surface perpendicular to a longitudinal axis of the at least one electrically conductive post.

13. The device of claim 12 , wherein the contact further includes at least one tab and at least one additional section coupled between the corner section and the at least one tab, wherein the at least one tab is configured to contact the substrate.

14. The device of claim 8 , wherein the at least one electrically conductive post comprises at least two electrically conductive posts, wherein each electrically conductive post is positioned adjacent a corner of the circuit block.

15. The device of claim 8 , the corner section including a flexible, conductive material configured to be displaced toward the magnet in response to a force applied to an outer edge of the corner section.

16. The device of claim 8 , further comprising:

at least one additional section extending from the corner section;

at least one tab coupled to the at least one additional section and configured to electrically couple to a substrate; and

a retainer section opposite the corner section and configured to electrically couple to the substrate;

wherein an inner edge of the corner section, the at least one additional section, and the retainer section are configured to form an inner region configured to receive and retain the magnet.

17. A circuit block, comprising:

at least one post configured for coupling to at least one other circuit block;

a contact electrically coupled to the at least one post and including a curved corner section extending in at least two directions substantially perpendicular to a longitudinal axis of the at least one post; and

a magnet at least partially retained by the contact and configured to be positioned proximate the curved corner section of the contact, the magnet and the corner section configured to magnetically attract the at least one other circuit block.

18. The circuit block of claim 17 , wherein the circuit block further comprises a frame coupled to the at least one post and including at least one other post configured for coupling to the at least one other circuit block.

19. The circuit block of claim 17 , further comprising a substrate coupled to the at least one post and having a major surface perpendicular to a longitudinal axis of the at least one post.

20. The circuit block of claim 17 , further comprising:

at least one additional section extending from the curved corner section;

at least one tab coupled to the at least one additional section and configured to electrically couple to a substrate; and

a retainer section opposite the curved corner section and configured to electrically couple to the substrate;

wherein an inner edge of the curved corner section, the at least one additional section, and the retainer section are configured to form an inner region configured to receive and retain the magnet.