I have a couple of RC model airplanes where the wings are held together by two plastic elements. In the event of a hard landing or worse, these are designed to break while safeguarding the wings.
It's not easy for me to find these spare parts, so I designed and printed them myself.
In the printing profile you will find a plate for PLA and a plate for PETG: the first is more rigid but breaks more easily (preserving the wings as much as possible), the second is elastic and does not break easily, but if the wings they receive a really strong shock it will be easier to damage them.

As I always recommend, before downloading and printing SPAM profiles, please make sure it was actually printed by author and the photo used is not only a copy of the print from the original profile or someone else's photo. Also check “Fast” profiles, there is no way to print this model faster without making it fragile and therefore useless…