I've been reading and looking at pics of all the homemade feeders and want to make some inexpensive hanging type with buckets. One post said go to the grocery deli for free buckets. So DH did, and I have about 6 of them now---but they are not round, they are squarish (not completely square, but more square than rectangular) and all the ones I see on this site are using round buckets, not sure if/how I can make these work. Maybe we just need to go back and ask for round buckets?? Any ideas? Thanks.