Here is a bike rack design based on Sonic The Hedgehog losing a bunch of gold rings to injury. Sonic’s misfortune would be a great place to park your bicycle!

This rack would give the illusion that Sonic was running along the nearby sidewalk or pathway just prior to running into trouble here. Also a few Sonic games had levels set in a city environment, so this would be replicating a game level in real life somewhat.

All the rings are perfectly round, however they would be placed at an angle to look like their oval-shaped video game counterparts. Also they would be aligned in rows to help with accessibility:

This design features only ten rings, but you could easily scatter 2 or 3 dozen around our hero. As long as a few rings are raised off the ground (at varying heights) for a dynamic scene that is true to the video games. Sonic himself would be a standee, but if you want to get really fancy a statue could be used instead.

If no bikes are present this would function nicely as an art installation too, something that is becoming more and more commonplace.