We used some small silicone cupcake hearts for our molds. You can use tins and different shapes/sizes too.
Bake at 300 for 5-7 minutes (or until the crayons look melted). Let cool and then pop out.
Pair them with a customized coloring sheet via Crayola Play Zone (FREE!, with code found in in crayon boxes). You can also do this on your own computer in photo editing, by selecting 'sketch' in special effects. Picnick also offers free photo editing online (no obligation), where you can edit your photo the same way for printing.
Here's a photo I did on Crayola.
To give as a gift, you can roll the coloring sheet, tie with festive ribbon
& attach the crayons.
A sweet little gift any Valentine would love.