Hello!
I buy my Teddy small toys made for miniature breeds and these include plastic chewy things which are hard but have some give in them.
He is over a year old now and he loves chewing on nylabones + these small toys which almost resemble the teething rings material for babies.
He also plays with miniature rope tugs, which are bound with a smallish plastic ring and miniature plush toys. I just ensure there are no plastic parts, like eyes and noses, which he could chew off and any signs of wear which he may choke on are removed or the toy discarded.
I have found that he will chew the carpet if he doesn't have something like the above to chew on so he always has two or three toys in the living room, hallway and kitchen.
I hope this helps? If you need brands or anything, let me know, and I will try to assist
