32 Best Homemade Fathers Day Gifts - Tip Junkie==some cute ideas for dad and grandpa (especially for those hard to buy for) like this daddy picture, could also do with individual letters and each kid creating a background.
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.