You might also want to check out foraging toys or boxes. My TAG loves to forage. He has a couple of toys specifically for that purpose that I put things in, and I make cardboard boxes for him. I put shredded paper, a foot toy, a walnut or almond (slightly cracked so he can get to it) and that kind of thing in it. They do crave human interaction though, so it's important to spend as much time as possible interacting with Miki. The more time I spend with Timber the more responsive and verbal he is. I think if they spend too much time alone, they withdraw.