This is an alternative frame for the little Eachine H8.
The problem I found in the original shell-looking frame was the flexibility of its arms, and how easily they could be bent, directly affecting on how it flew.

My version is slightly heavier than the original, but I personally find the behaviour of the quad is smoother, more stable and more predictable now. However, the fact that my version of the frame is a tad heavier, means the quad has less total useable thrust, but for flying indoors I don't think a lot of punch is needed. That being said, it stil has enough power to flip.

Folger Tech Prusa i3 2020

No

100%

You might have to enlarge the motor housing holes, depending on how your print turns out.