When you can't do an activity...

Maybe you don't have the time or materials to do the activity that I do one day.  Maybe you don't like the activity I have planned for one day.  Here are some suggestions:

1. You don't have to do my activities at all.  The point is to do something creative 15 minutes a day. Do anything!
2. Do a past activity that you enjoyed.  There is no reason you can't repeat activities. If you are having a rough morning, the Monday Keep It Simple, Stupid activities are the quickest way to get some creativity in.
3. Work on an ongoing project.  I spend every Sunday working on a longer term project.  If you don't want to start something new, pull that out and work on it for a few minutes. 
4.  Modify or re-imagine today's activity so it does work for you.  That could be a creativity activity in itself.  
5. There is no gold medal or million dollar cash reward for doing the challenge, so if you have to miss a day, don't beat yourself up and don't quit.