Best dough/frosting for Christmas Cookies??

I am having a major dilemma..I haven’t done the sugar cookie cut out and frost thing in sooo many years..and am stuck..

Does anyone have an amazing recipe for the best cookie dough to use and ANY hints at all for frosting. painting, dipping the cookies?

I want to start a tradition for my granddaughters-something special for the 3 of us, that they hopefully will take with them when they reunite with their parents. Granted they are only 3 and 1 1/2..but its never too soon...

I remember my Grandmother’s wonderful decorated cookies, but we were never involved in the process..so am pretty stuck on the whole thing..(and pretty tired of the peanut butter or chocolate chip things we do)

Thanks in advance!! We will post pictures!!