Mod comment: unclear whether this is regarding a single type of FeverCritter or if several have been thrown together.
Encounters with BA€token happen in and near entrances to apartment buildings, houses and gardens (I always meet it near the pavilion in my garden), but also event locations and meeting points.
What does it look like? An outline of wafting, changing density, which in some cases approaches the observer briskly and enthusiastically, causing them to have a rather pleasant emotional response to the Critter. However, this feeling will often transform into a sense of disappointment and/or inadequacy, and BA€token never crosses the threshold.
I can relate to this feeling of realising you are invited but not welcome