That sounds very interesting. What pellets do you shoot for best accuracy?My favorite cooped-up shooting hobby: indoor air rifle or air pistol shooting.
You can get into it cheap with a Beeman P17 pistol. It's an extremely accurate one-pump pneumatic with an incredible trigger. It will literally put the pellets in one ragged hole at 10 meters. (Beeman claims they're capable of a .20" group and it's very true in the case of the two P17s I have.)
The best part? They cost about fifty bucks. They were thirty when I bought mine. I use one with the open sights that came on it and have a 2x scope on the other one.