A way to move genres or sub libraries in and out of the library.

I have a lot of Christmas music. I only want it appearing in my library for about 6 weeks a year, the rest of the time I would prefer it be archived elsewhere. A way to move a genre or sub genre of music in and out easily would be lovely. The same with children music. Sometimes you need it in the library, but not all the time.
If Bliss could move the christmas's music out of the iTunes library until I ask it be returned would be very handy.