It's important that you store cookies carefully after they are baked. Store crisp cookies loosely covered at room temperature. Soft and chewy cookies should be tightly covered so that they don't dry out.
Don't mix strong flavored cookies (like Ginger Snaps) with other cookies because the flavor will transfer.
When I frost cookies, I let them dry at room temperature before placing them in cookie tins. Place waxed paper between the layers to prevent sticking.
To help control the chaos of the holiday season, bake your cookies ahead and freeze them. Cookies freeze well and thaw quickly at room temperature. Wrap them tightly and store them up to 3 months.
And don't forget- if you leave cookies for Santa, he'll need a glass of milk!