A small bundle of possibility, expressive and soft as a cloud. It has a coating that looks like combed feathers, white and pink with shreds of other colours that move with its moods. It's large, though the largeness is entirely your point of view. Larger than a mouse, larger than a dinosaur, or larger than your favourite uncle?
This is, by all means, not the only way H appears.
Houm loves you. Houm doesn't care how you act, or who you are, H loves you.
Look at Hm.
How could you not love Hm?
H even loves those tainted by Strange.