DIY paper snowflakes. If you make it with smaller pieces of shiny/metallic papers, it will be great for a frugal tree ornament. Extra idea: To make a homemade wreath, use matte green paper and use only three pieces for each 'flake', connect 3-flakes together in a continous round...ta daaaa, wreath!
SUBMISSION: “Surgical instruments” from Marc-Jean Bourgery (1831-1854), Traité complet de l’anatomie. Volume 6, Plate 17. ed: I posted this a long time ago. I recommend Vintage Printable for cool old illustrations like this.