Happy Spinner is a joke. I can get the same junk from playing the game and it does not cost me 900 stars to get the junk. 900 stars I can use to level up the items/junk from the multiplayer matches. That's if you don't get booted right at the tail end of the game. (something that has been in the "Fix" list since it went online apparently. Which has been a month in the waiting.
I am a level 40 and I still get the level 1 junk. Don't expect to get to many good items just because your a higher level. If you really want the good stuff, I would suppose you have to pay REAL Money for it.
The only appeal to this game, is playing with friends and that it is cute. And the Xbox Experience which is lag, booting and waiting and hoping that you will get in a game that is "evenly" matched.. HAHAHAHA!! Evenly matched!! Now that's funny!!!
Your better off playing the Single Player campaign and getting the Items with the Gold Star and then leveling and making the modifications to those.