People and creatures use the hollows inside trees for a variety of things. Below are some possibilities for your game. You can roll randomly for a result below, use the handy number provided with each entry to figure out your result on a d12. You can also pick the one that works for the area in which your characters currently linger.

d12. Curiosity

1. Six kittens are purring within it. The momma cat acknowledges you with a “brrrt” sound and seems laid back.
2. The ant inside this tree is the size of your head. When taken out, it shrinks to normal size for that type of ant.
3. The inside of the hollow has been painted white, except for the words that state: “Trace these words to enter a new world.”
4. There does not seem to be an end to this hollow. The tree is big enough and the hollow is big enough that you could step inside—but do you dare?
5. Touching the inside of the hollow causes the tree to shake and rumble, as if giggling in a very deep voice.
6. A pink flame flickers within the tree. It does not go out regardless of what you do to it.
7. The top of the tree erupts into a wave of bats—or stirges—when you place something inside the tree.
8. A piece of folded parchment states: “Wait here until midnight.”
9. A thumb-sized ball drops from inside the tree. Then another a minute later. Then another a minute after that. Each one bounces out of the tree and down into a nearby pond.
10. The tree attempts to bite whatever you put within that hollow.
11. You are pulled into the tree and end up being spit out of the hollow of another tree. Where are you now?
12. A voice whispers, “Use not the hollow within my tree, mortal, unless you seek to pay the price for doing so. I can keep anything safe from those who seek it, but you must provide me with a boon upon my request for this service.”