If you download your fonts from sites or make them yourself, keeping a handy backup of your font is simple. Before you install the font packages just copy the file and save it to a backup location. You have several options for backup font locations.
A few fonts
If you only have a few fonts then you can use a USB flash drive or burn your stoned fonts to a CD.
A lot of fonts
If you have to manage a large number of fonts then you should move up to an external hard drive. This will give you considerable storage. One special note to Mac users, don’t use the same hard drive that you use for Time machine, or you will end up writing over the saved files when you back up.
Yes, you will have to install and uninstall as needed, but for fonts you only use once or twice a year that is a smart move.