Has anyone ever kept a completely unconventional pet before?

Basically, I decided to overcome my arachnophobia a bit, and I’m keeping a tiny spider in a tiny see though box, and when midges and small flies fly into my room I trap them in the box, the fly panics, and flies on top the net that Sid (the spider) has layed on the ‘floor’ of the box. I water him by spraying mist onto the box. He cant escape, and I wont be too upset if he dies… I don’t think.

Anyone else done this with a fly or spider or ant or whatever?