Spin wheel once a day

Don't present it to the player until they have logged in - once in a 24 hour time period.

Puzzle and Dragons did something similar - but it was eggs you received from a (what's it called) tamagotchi machine. The only time the player was granted access to the machine was when there was a token to spin the wheel. The tokens were earned every 24 hour period.

Kind of fun - to log into the game once or twice a week to receive 3-4 free tokens to get eggs to hatch a new character/monster.