Okay so... I have a mount idea and a pet idea (if not already suggested)
Mount
A giant lava lamp with fire blasting from the bottom (end) With moving lava (wax) on the inside. (colors may vary)
Pet
A pumpkin with changing facial features, with its vines for legs and feet. also your pet should be allowed a mini mount (depends on type of mount appropriate for that pet)
Please comment appropriately on this post if you think they should make these.