Mittgender, which is similar to Bungender, is a xenogender for when one's gender is influenced by a feeling of coziness and warmth. For people who may feel that their gender is very soft and warm; fluffy and calming, ect. It can also be tied to a feeling of nervousness about one's gender, but also feeling secure , joyful, and happy about one's identity. Feeling serotonin in knowing one's identity yet still feeling somewhat anxious about it.
As well as those feelings influencing it, bunnies, mittens, rabbits, and other small, cozy things can as well.