The handmade tanks is actually a really good idea... I know that acrylic can be expensive, but breaking it down to each individual item, it is not that bad. I did decide to go for mesh rather than acrylic for the divided tank anyways x) WHICH I will post pictures of the progress of that said tank eventually.
I tried to find beanie boxes and they are non-existent around me apparently? It is odd.
Most snails breed on their own, but I know some snails (apple snails) are not too hard if you make sure to have a bunch together since they do need a male and a female to procreate.