After they bloom and die down, you can plant them in the yard. Be sure to NOT cut the green stems even though they start to look ugly. The plant needs the stem for nourishment in its dormant stage. If you have more than one plant of the same type in the yard, the next time they bloom you will have a few more than that. :)
Check for sales even after the holidays if you want to get some just for your garden. I love watching these flowers bloom in the house. Click HERE for a previous post about these flowers.