I used an old heart-shaped box from a Valentine’s Day gift from the hubby one year but you could probably do the old school way of folding another sheet of paper in half to cut a symmetrical heart shape. The foam stickers are from a Valentine’s kit that I bought at Wal-mart for $5. We have been using these to make tons of fun art projects!
Isn’t this precious? I will have to say that using my 2 year old’s hands to form a heart shape was a lot harder than I expected it to be! I imagine a preschooler or older would be able to do this very easily.