How can I upcycle dish drainers?

You mean besides drainers?

Niccie, here are a few ideas that may help you. Dish drainers are one of my favorite ways to organize and store many kitchen things like pot lids etc, but here are some other ways:

https://www.hometalk.com/diy/organize/kitchen/european-over-the-sink-dish-drainer-16520707

https://www.hometalk.com/diy/organize/kitchen/easy-organizing-trick-21134318

https://www.hometalk.com/diy/kitchen-dining/the-farm-kitchen-768569

It would certainly work as a cabinet organizer for plates etc.

Drain your dishes. You can always donate them to charity.

This article suggests ways to upcycle dish drainers.

This video shows creative ways to upcycle dish drainers.