Start here
home
The bakery gives away buckets — you only have to ask
One small thing you could do
Next grocery run, ask at the bakery or deli counter whether they have empty frosting buckets to give away. Asking is free, and the answer is usually yes.
I asked the bakery counter if they had any empty icing buckets. The woman came back with three, lids and all, and seemed genuinely pleased somebody wanted them.