I make a lot of witch-themed toons. As such, I would like to make a few costume suggestions:
1. Witches' Broom - a temporary power that is functionally exactly the same as a jet pack/flying carpet, but looks like the witches' brooms that the Cabal uses in Croatoa.
2. Domestic Cat vanity pet - like a witches' familiar. Lots of other toon themes could benefit from this, too.
3. Allow ears with hoods - and let elf ears just clip through the sides of the hood.
4. Hood with long hair - a hood that has long hair coming down onto shoulders/chest a little, but not so much that it is likely to interfere with other costume parts.
5. Hood in "back" position - I guess this would be considered a backpack or a mantle.