I would love more BGs that use gems! I think that Kunzite from this year as well as some others would be amazing. Meteorite and Fire Opal could also be very cool! I just love the idea of using crafting items to make BGs. Maybe even have a Fuchsia related BG for the Fuchsia flowers. Just throwing that out there, I just like the idea of using craft items to make backgrounds. These are just examples, but I would love more backgrounds by using event crafting items.