heronblu what a great idea and story. I think you need to go to the next step and get a worm box or use a small kid's plastic wading pool(with cover) and use the same process. If you put a few holes in the bottom of the bucket and put a piece of small mesh screen on the inside bottom of the bucket that will get rid of the extra water will allow for more o2 and decomposition in the soil. I have used dry oatmeal , corn meal or grits as added food.

Nothing like a worm farm or rocks to skip for making small kids smile!!