I used a 12qt washtub (same aisle as dish racks) from walmart and take a razor and trim the lip and cut a entry hole. I take a mini torch and smooth the edges and wash it. Havent seen them since.
On a smaller scale there is a 5qt pail (with metal handle) and I did the same thing for my BP baby. Works wonderfully.
Large manufactured hide of similar size is around 10-12 dollars. Washtub was 1.97
Medium hide is 7.99 i checked yesterday. Pail was 2.17 and they took under 5 minutes beginning to end.