>>313581992
You can buy people stuff but no gift cards or direct money. And if you do buy stuff at least add a christmas card made by yourself even from MS paint.

Ex. Buying a full avatar from booth.pm with some clothes as well. Add a christmas card crafted by yourself in this case.

If you frankenstein it fully though and ready for upload, no christmas card is needed.
I think it's about the thoughtful effort and time given rather than hard monetary values.
To be able to give some of your time and brain cycles for another anon.