I like to visit National Tiger Sanctuary about once per year. It's on the way, just off 65. I probably wouldn't go there myself when the weather is this cool, but they say the cats are more active in colder temps. Since it's only about 20 minutes south of Springfield, it's something that you could easily do another time. It's also a little pricey if you don't find some kind of ticket deal, and they do a lot of BOGO type offers if you want to wait for one. If you don't find a better available offer, I think they will give a small discount for being a local, if you ask for it.

I can't remember ever visiting Cosmic Cavern, but that's something that I'd probably want to do if I was in the area.