Stackable containers

1 . A lid for closing an open top of a first container comprising:

a) a top surface;

b) an annular ridge positioned on the top surface and having an inner edge and an outer edge;

c) said inner edge of the annular ridge defining a center recess adapted to receive the base of a second container; and

d) said outer edge of the annular ridge adapted to engage a base of a third container.

2 . The lid of claim 1 further comprising a circumferential rim.

3 . The lid of claim 2 wherein the circumferential rim is downward extending and terminates in a circumferential lip that is adapted to engage a circumferential rim of the first container.

4 . The lid of claim 1 where the lid is molded from plastic.

5 . The lid of claim 1 where the lid is constructed of a transparent material.

6 . A stackable container comprising:

a) a body having a base and an open top;

b) a lid removably covering the open top of the body;

c) said lid having a top surface with an annular ridge positioned thereon, said annular ridge having an inner edge and an outer edge;

d) said inner edge of the annular ridge defining a center recess adapted to receive the base of a second container; and

e) said outer edge of the annular ridge adapted to engage a base of a third container.

7 . The stackable container of claim 6 wherein the lid includes a circumferential rim and the body includes a circumferential rim that is engages by the circumferential rim of the lid.

8 . The stackable container of claim 7 wherein the circumferential rim is downward extending and terminates in a circumferential lip that engages the circumferential rim of the body.

9 . The stackable container of claim 8 wherein the circumferential rim of the body is generally horizontal.

10 . The stackable container of claim 6 wherein the base includes a downward-protruding annular wall.

11 . The stackable container of claim 6 wherein the body and lid are molded from plastic.

12 . The stackable container of claim 6 wherein the lid and body are constructed of a transparent material.

13 . A set of stackable containers comprising:

a) a first container including:

i. a body having a base and an open top;

ii. a lid removably covering the open top of the body and having a top surface featuring a recess;

b) a second container including:

i. a body having a base and an open top;

ii. a lid removably covering the open top and having a top surface featuring a circumferential ridge having an inner edge and an outer edge;

iii. said inner edge defining a center recess;

c) said base of the first container body sized to be received in the recess of the first container lid and in the center recess of the second container lid; and

d) said outer edge of the circumferential ridge of the second container lid sized to engage the base of the second container body.

14 . The set of claim 13 wherein the lids each include a circumferential rim and the bodies each include a circumferential rim that is engages by the circumferential rims of the lids.

15 . The set of claim 14 wherein the circumferential rims are downward extending and terminate in circumferential lips that engage the circumferential rims of the bodies.

16 . The set of claim 15 wherein the circumferential rims of the bodies are generally horizontal.

17 . The set of claim 13 wherein the bases each include a downward-protruding annular wall.

18 . The set of claim 17 wherein the base of the second container is broader than the base of the first container.

19 . The set of claim 13 wherein the first and second containers are molded from plastic.

20 . The set of claim 13 wherein the first and second containers are molded from transparent material.