This is an original idea for a mini compost bin that is specifically for people that live in small apartments or homes that lack a backyard. You could possibly use this device for developing soil to put in window flower boxes. A compost bin made of highly obtainable items is a compost bin that is worth a try.
Be sure the ventilation is separated from the interior of the home or apartment
Step 1: Supplies
Jar With Top
Two Small Wheels
Step 2: Procedure
Simply cut two holes. A small one about 1/4 inch and another 1/2 inch.
Make the aluminum tube with the soda can. Cut a square out of the can and curl into a tube that fits into the small hole. A 4 inch piece of PVC pipe will be the bigger tube.
I did make a spinning mount but I don't have a picture.