Any helpful recurring task ideas?

I'm overly organized and get off on having my junk together using my todo list, and recurring tasks are a big part of that.

So far, I've got:

* Set up weekend every Thursday * Pay Rent every 1st * Pay Credit Card bills every 8th and 14th * Renew vehicle registration every Aug 1 * Do Taxes every March 20 * Dog flea medication every month * Different types of workouts * Trim beard every few days * Clean house every Sunday * Haircut every 4 weeks

Anything useful you guys use?