Indoor boredom-busters for dogs?

[intheflow]

5. I'm trying to avoid going out on my one day off this week

to buy some puzzle toys, like you suggest. I found some websites that suggest making your own from plastic bottles, but Honey has been known to ingest plastic bits from toys and I don't want her learning that plastic bottles are good toys. The only toys she gets now are cotton plush toys, which she mouths but doesn't eat, not even to get the squeaker out. My other dog won't touch plastic and rubber toys, so I can't even give him a Kong with treats. They also get a lot of bones, but even bones become boring on these long, cold, indoor days.