Yeah, I'm not a huge fan of the stick-on hygrometer/thermometer sets, but it's probably gonna be a week or two before I can get one of the good ones, so I needed something to ballpark the humidity till then.
I have a digital thermometer (one of the point and click kinds) that I use to look at heat gradients.

If I had the money I'd get him a hygrometer setup and mister like I have for my pacman, but I don't see that happening any time soon :P