Ashli used this idea this year. Turned out Super Cute! Framed Father's Day picture of each child holding a letter to spell DAD. You could do the same thing with the grandkids and spell GRANDPA. Such a sweet idea.
This no-sew DIY teepee might be intended for the kids, but you're going to want to spend time inside, too! You'll find most of the items needed around the house already, and the fact that no sewing is required just makes this a must for the house (inside