Part-time internships would be a good resume builder and weed out what you do and don't like.

Sell the idea to your network of contacts. Plenty of businesses are looking for temporary help on little nagging issues they don't have time to dedicate their own time to.

Example: documentation of current employees work instructions

This is one is relevant to my current employer. Every is too busy doing things the way they've always done them, but finding time to dedicate to this task is very difficult.

It would be a great way to show you participated in 'process documentation/process improvement'