I printed thumb sticks for my Taranis transmitter, the original sticks were a little bit too small and too sharp for me. I’m also finally getting all the pieces to 3D print and build my first racing drone, this is my favourite quad frame so far:
http://www.thingiverse.com/thing:629338
Do you have any other you’d recommend? 
https://youtu.be/_pkp8WsC-UM