How to build a creative playground Here are 4 tips on how to lock yourself into a cage and have fun: 1. Make variations: Stick with something that you can iterate and vary. Think of basketball: There is only one goal, yet there are countless ways to achieve it. 2. Limit your time: This lets you know when you are done. 3. Pick a format: You won’t get lost in too many options, as for instance: too many pens. 4. Focus on a skill: Nothing protects us better from doubt than personal progress. This is the magic formula for creative fun: Less decisions — more room for play.