Two Christmas tree designs for gauged ears. The zig zag tree is designed specifically for a 00 gauge (10 mm), but the outline tree should fit down to a 4G. It'll dangle a bit in larger holes, but should stay in with the extended hook shape.
The zig zag will benefit from a little support. The outline should be printed with a brim to keep the two ends from peeling up.
The author marked this model as their own original creation.