I build stupid things and needed a motor mount but failed in finding one so I made it. Motor mount for Arrma 3sBLX brushless kit ARA210005.  I included screw holes and printed it at 95% infill.  

(Slaps the mount) "That ain't going nowhere!"

Remember to wear a hat when at the beach and to always build stupid.  It is not a failure; it is a prototype with free learning.