I've been considering getting fiber to connect two switches on opposite ends of my apartment. The distance is short enough that I could use a slim Ethernet cable, but even the slim ones are pretty noticeable. Fiber cables can be incredibly thin.

I did research, and the problem I found was that there is very little availability for fiber cables of alternative colors. Most of the cables I found that were the right type and thickness I wanted, I could only find in bright yellow that would stick out.

There are a few products like invisilight that are incredibly thin and almost clear which would be ideal. However, they're only sold in bulk to businesses so I could only find some on ebay. It felt too adventurous for me to pull the trigger.

Currently 5Ghz wifi is sufficient, but its bad enough that I refrain from doing anything that consumes a lot of bandwidth, like torrenting.