I'm a long-time fan of paper toys. They can be simple or complicated but they are always clever. As an added bonus they are eco-friendly and you can recycle them when you're done. I most recently made two paper toys from the book Papertoy Monsters. The first is a yeti. He's pretty sturdy but either the cats or the kiddo have broken his arms off multiple times. Nothing a little extra glue won't fix!
The second is a cyclops. I didn't do a terrific job of gluing his legs so he's a little wobbly, but still cool. He's (so far) unscathed by cats or kid.
I highly recommend the book. It includes a great selection of (mostly non-scary) monsters by many different artists. Punching out the pieces is a little fiddly but the pieces are pre-scored and two-sided, something you don't get on models you print at home.