From what I can find without digging through the news Liomemo has existed for at least 4 years and the only thing you can get from it is a Snake Skin and Level for Reptile Roundup.

So I suggest that it gets prizes similar to the ones for Trivia; a small amount of sb per level and a small chance to get a random decor. or small amounts of sb for the first 3-4 levels and an item for levels 5-10.[The item pool would probably be the same items as are on the cards]

I haven't played Liomemo in a while so I'm not entirely sure if this is balanced.