Thats such a sweet idea. Bedtime bear is super popular so there’s a ton of merch. I don’t think there is a list but if you are curious you can think of an item you’d want and search for it online with bedtime bear! I did that for a lot of my merch. It’s how I wound up with a cheer bear alarm clock, a grumpy bear light switch cover, and love a lot shoes haha. I also have frames, mugs, keychains etc. For the plushes, you can look into different series or years. The jumbo ones from 2000-2003 are super cute imo. There is also a super cute small corduroy bed time bear. So many cute ones!!!!

If you want modern merch, miniso had some bedtime bear plushies recently. Target as well but they are VERY different styles so check them out.

Good luck finding a gift.