One thing I often do, especially if I've doubled a recipe, is take out some parchment paper (I use parchment paper on my baking sheets: works great!) and put it in a plastic freezer bag, then fill it up with spoonfuls or balls of the cookie dough, and put the whole thing in the freezer.
My mom likes to lay out the drops of cookies on a cookie sheet and freeze them and THEN put them in the bags, so there isn't so much danger of the dough sticking together.
Then when I feel like warm cookies, I just get out the freezer bag, pull out the parchment paper, and rearrange the balls of dough, then slide the parchment paper onto a cookie sheet.
I don't even necessarily defrost them (at least not with recipes that I've made a lot and know what they're supposed to look like).
Almost mandatory, however, is writing the name of the cookie recipe on the bag (a Sharpie works well), along with the temp. for the oven and how many minutes to bake them.
I think pre-baking the cookies would work fine, too. But it's nice to be able to have actually baked them recently, with all the work being done ahead of time.