Always use push blocks, push sticks, and feather boards when ever possible.
The small parts jig Bob posted the link to is just one of many that can be used when the part is definitely too small to be routed while being held in your fingers. Don't ever use the it's just one cut reason for not using a jig like this! Just one cut may just leave you with just one finger!
Bottom line, keep you fingers as far from the blade as possible!
Work safe, Have fun, Cut some wood,
Your BRAIN Is The Most Important Power Tool In Your Shop. Turn It On Before You Turn On Any Other Power Tool.
A Disability Is Only A Disability If You Let It Be One