Another thing you can do is have an endless supply of tickets. Here's how:
Create a second account on PSN and friend your main account. When you win a level ticket on your main, send it to your secondary, then save that game data to a USB stick. Once per day, send your main account a ticket, then quit the game on your secondary account, reload the USB data to it, then sign out of your secondary.
Sign in on your main account, start the game, and you find you got a gift! I give myself level tickets or 1000 tickets just about every day, along with paints, mods, and more.
You have to make sure you're paying attention, though, or you could end up writing over the wrong account's data!

I keep multiple backups of each account on USB sticks, though, so I wouldn't lose much if that happened, and it hasn't happened yet.