nisse from Ikea, along with a shiny silver (plastic) Christmas tree (also from Ikea)
I then brushed ink from a stamp pad into the grooves and wiped it off again with a damp cloth (then put them back into the oven just to make sure I got all the moisture out) before giving them a lick of varnish. I played around with various colours, but this was the effect I liked the most.
POSTSCRIPT: it seems Waffle has discovered the hanging balls and snowflakes. I took this video of her being super cute and then had to spend 20 minutes untangling them (and shortening them)