A homemade Christmas tree card (or invitation or gift tag) that doesn't require special equipment or too much work. Use a lollypop stick (or something similar) as the trunk, ribbon as the branches and a gold star as the topper.
DIY: Cartões de Natal
Yarn Silhouette Art Craft - This would be cute for any holiday, just use an appropriate cookie cutter to trace and cut out the shape, then whatever yarn works best for that holiday!
use white paper or paint edge snowy white
"Deck the Halls" DIY Christmas card idea. I could probably dig up some cute buttons for this super-cute card!