You mean as in christmas diy (foraging) toys or actuvities to do with your bird? I have Been making Some christmas toys the last few days, I Could post Some pictures later if you would make like. If iT snows where you are you could bring Some snow in for them to explore! Maybe you can find a christmas tree that has not been treated and make iT a play area for them. You could also cut Some branches of safe trees, and put them in a holder to replicate a christmas tree. And basically if you do any DIY toy with Blue and while ir green and red iT Gets a christmas vibe!
Also scavenge the dollar stores you encounter, they could have a lot of christmas stuff that is safe for your birds!