Here's a handy thing to hold a light fixture to a Prusa i3 Mk3. The utility light is of a type commonly found in DIY big box stores here in the USA and it comes with a spring-clamp which attaches to the light via a ball-shaped feature. This thing simply replaces the clamp and allows the light to be mounted to the Prusa where it will be out of the way of the print head. The angle of the light can be adjusted and then locked into place by tightening the clamp.

I use an Octoprint setup and this light helps the camera take great pictures and video. For efficiency and color accuracy, I installed an LED BR30 type flood light into the fixture.

Print from something strong like PETG. PLA may be to brittle. The weak point is where the ball attaches to the arm, so don't put a larger fixture or too much weight on it.

SeeMeCNC

Rostock MAX v3

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Use a higher infill for strength and a few perimeters.