* Adding sand and gravel in the bottom's not a bad idea. Is it harder to get your 'boo in the buckets though? Also, do you have to be more careful with them since you only have a "cap" of concrete holding it together? We can be a bit rough on them during storage and transport.

Put your boo in the bucket then add sand or gravel, pour the concrere, then put two or three screws or nail thru the bucket into concrete and let it set up.