I have heaps of big white buckets with lids.
I just cut slits around the bottom then heated them over the BBQ (we didn't have a lighter or matches lol). While it was hot I opened the
slits up. When it was cool I filled it with wheat, popped the lid on and hung it from a tree.
The bucket was free, the wheat was free...cheap as!
......and Jamie said it wouldn't work!