Thanks to all who made a guess about the tiny fir tree (here and over at Cutoutandkeep.net)! The closest guess came from Astrid because a toothbrush is almost correct:

Interdental brushes, trimmed and drowned covered in green paint.

Thanks to random.org I present you the winner:
“gnukatze” aka Klaus, congrats!
Send me your postal address and I’ll send you the ACEO
I’ll write the tutorial for the snowman at the weekend (I was so consumed with crafting that I didn’t take pictures the first time, duh). And tomorrow I’ll show you my ACEO’s. Now it’s time for me to brush my teeth – with an ordinary toothbrush.