Christmas Gifts for a D&D Enjoyer?

With Christmas coming up, my family is doing a secret Santa-style draw. I drew one of my cousins who plays D&D often, and I want to get him something he'll enjoy. I play and DM, but I really only have dice and a couple books. The budget is around $50 CAD, does anyone have any accessory recommendations? I know I have plenty of time, but I've been wracking my brain for any ideas but I can't think of anything. And hey, this might give inspiration to others for gifts. Thanks in advance!