what if you filled it up like half way and then built an island in the middle out of rocks and driftwood; and then every time you found a spider or a beetle or something in your house you could pretend you're a pirate and maroon it on the island for disobeying orders

it would be like a fun game, and im sure all the bugs in your house would greatly approve of being marooned rather than squished. you could even put up a pirate flag on the wall behind the tank, i could go on and on, there are all kinds of possibilities with this idea.