I usually raid the $2 shops. I have a big shoe box full of aquarium plants that is overflowing. That was a good expedition. I went to various suburbs working my way through them.
I haven't had much luck with Pet Stores, but many of the $2 shops have pet items and general home thingies to make it look nice.
There's one shop near my work that has a big resin castle. Needs a bit of work, but the point is these places can be gold mines
Thanks for sharing those, I'm going to start looking at budget shops again!