Angry after having to use a pair of vice grips to start my dryer for a few years, it dawned on me one drunken evening that I could easily model and print one.

I whipped this out in about 5 minutes, printed it, and it slid snugly on, the first try. The only thing it is lacking is an arrow pointing the right direction (I just used a file and made one of the tips arrow shaped)

I hope this is useful for someone else.

Measurements:
45mm Outer diameter
6.2mm Hole size
5.1mm Slot width