Well, kill 2 birds with one stone (that sounds violent), how about, help 2 birds with one purchase? Or if you don't need buttons, I'll bet there's someone on your gift list who does.
Anyways, check out some of these great button ideas from etsy sellers. And this is only the tip of the button pile. If you know of a button maker/collector who should be on this list, please leave me a comment!
Packs of assorted new and vintage buttons from Nutmeg Bunny.
Handmade novelty buttons by Buttons by Robin. Buttons like these penguins could change the way I knit. Instead of starting with yarn, I'll start with the buttons.
Amazing polymer buttons from Espresso Italiano.
Raku buttons by Mary Richmond Tile etc.
Vintage 50s German glass buttons from More Than Buttons.
Rainbow ceramic bird buttons from Branch Designs.