Here's a cute gift idea.  Have your kids color pictures.  Modpodge them on a piece of tile.  Write their name and date on them.  Once the Modpodge dries completely, put at least 3 coats of poly on them.  One coat at a time and let dry at least 24 hours before the next coat.  You can put some coaster legs on the back of them and you have durable, usable coasters as a gift for the grandparents or other family members.  A way to save those special moments of memories.  You can do the same with printed out pictures as well.  Just take your time and make sure you get all the air bubbles out before applying the polyurethane. 

I've not poly'd this one yet, but after today begins the process.  I think I'll make some with coloring pics, some with pics of the grandkids, some with other pics of memories and give them as a gift to the parents :)