Christmoss Tree!

It's a mini Christmas tree made of moss!
The actual model you print is the spiky frame that the moss clumps are hung on, and the water/debris dish. It's 12 cm tall (about 4 ¾" for you tradesmen), and shouldn't need supports if your machine is dialed in.

► *FULL STEPS* ◄
1. Print the model, clean up any stringing
2. Scrape up some moss from wherever (best to get it in sheets, from concrete)
3. Pull the moss into large-ish chunks and hang them on the spikes, starting at the top. Use tweezers to remove debris. Continue until the tree is a little too puffy
4. Use an old pair of scissors to clean up edges and sides
5. *Gently* use both hands to squeeze all the moss further onto the spikes. The tips should juuuust barely be peeking out

Make sure to spray the moss frequently to keep him happy. Just like a Christmas tree, though, he shouldn't last forever...
If you don't have moss lying around everywhere like I do, I suppose you could buy some. But that's pretty lame. Get creative, maybe