Front legs for the Maker Tricopter based on the servo tail design.  Double stick tape can be used inside for the beginner so the leg is more likely to disengage than break, or a hole is included for a zip tie if you would like a more permanent installation.

http://lucasweakley.com/product/maker-hangar-trico...

NOTE: The photos show a prior version which did not have additional structural support or a hole for the zip tie. A new print and photos to come.