Do you like bases? Do you like guessing games? How about both at the same time? My suggestion is for a guessing game on bases. It could work something like this:

Easy Mode > (Event Applicator only bases such as blazing, inferno, ice etc)
Medium [Normal] Mode > (Oasis bases, NCL bases, breed only bases such as Onyx, Caramel, Sunset)
Hard Mode > (All bases in game)

If having a game full of bases isn't your thing, the difficulties could work like this:

Easy Mode > Eyes and Mane Shapes
Medium Mode > Bases and Mane Colors
Hard Mode > Markings


Credit to wiki for pic linked for my shitty mock up

GAME MOCK UP:

"Think you're good at identifying things? What base is this?"
( ) Teardrop
( ) Celestial
( ) Sunset
( ) Prune


The possibilities for this game are enormous! It would be a fun and easy way to better your memory of the many bases/manes/markings/eyes on this site! I'm not sure how prizes would work, but even if the game didn't include prizes (like LionMemo), it would still be a fun way to pass time and learn/memorize.

If you don't support, please let me know why! Suggestions to better this welcome!