I've heard of the beetles before. We have some nice gold ones here in Connecticut, as well as some green and yellow shield bugs, but I obviously won't be able to get a pic until summer.
A few years ago I found a Chinese mantis in a windowsill in November and decided to keep him inside. Smartest insect I've ever seen. Sometimes knocked on the top of the terrarium when I went by. If you let him** out of the terrarium, it would fly* to the table and watch the people walk around the room. It ate anything you put on a stick: beef stew, scrambled eggs, cheese, lettuce(why, I have never known). Favorite food was fresh peppers though. Funniest thing is how I could never put him back in the box twice. Once you got him back in, it learned how he got stuck and would do his best to avert it the next time. Even though it only lived until February because of short lifespan, they are very much worth having around for the sheer number of funny things they get into.
*mantis flight is not exactly what I would call "flight". It looks more like a helicopter that's been shot down trying to find the softest way to land.
**"he" is important to remember if you want one around the house, The females are much more content to sit still, and so aren't a source of comedy gold when they try to avoid being put back.