Transparent Fiber Optic Patch Cord Reel G657A2 50-100m(LC-LC 100m with Drum)

You can also DIY it. https://www.reddit.com/r/homelab/comments/1sz9li4/invisible_bend_insensitive_bidi_fiber_is_amazing/ is a post where someone else did. He also posted another pic down in the comments showing it going around a corner. The specs listed for the InvisiLight fiber are technically better than G.657.A2, but I'm not sure how accurate they are. I bought some of the generic stuff for $15 to play with, but don't have any plans to buy the expensive InvisiLight kit just to look at it. https://www.amazon.com/dp/B0FBS7N1WH/ is 100m of G.657.A2 fiber with LC ends (smaller than the SC used by InvisiLight) for $22.https://www.amazon.com/dp/B08LDJ44XF/ is a pair of 1Gb media converters with bidirectional LC SFPs for $64. If you have the need/desire, you could also step up to 10Gb SFP+ media converters for more money, or use switches with SFP ports builtin. Other than the appearance, this stuff behaves just like any other standard fiber optic networking cable.