I came across this model when someone from Thingiverse asked me about doing a helmet which had feathers. I remembered I did this model about a year ago for someone else and never uploaded it.
The feather (duplicated and sized) and otter were already built models. All I did was arrange them and created the base.
So here it is...
It was originally for the [Hermione Granger's Wand]. I also included a version without the "familiar" which I imagine you could print separately and add to the base, if otters are not your thing.