Here is an idea for a vertical garden in a classroom (plus a fish tank). This could also work in other places -- homes, places of worship, community centres, etc. Maybe even outdoors? With a mesh covering over the fish tank, the cats couldn't get in.
Reinterpreted design of the classic fishbowl, evoking the feel of a mountain range. Designed by Aruliden for Gaia and Gino, handmade glass fishbowl with a super cool textured interior landscape. Fish not included.