Surprised this hasn’t been posted yet. If you are still trying to find a use on the new eBay code, here are some that might interest you:
440pc Finish Classic Everyday Cleaning Dishwasher Pod Tablet Regular Pre-Soaking - it was $12.99 for a pack of 110 from Chemist Warehouse recentlyRazer DeathAdder V2 - Wired Gaming Mouse - Halo Infinite Edition - AU - currently the non-HALO version is listed at $34 on Amazon
Note: the code is single use.
If you've purchased the Switch OLED, Paddle Board or Projector, you won't be able to use the code again.