In honor of St Patrick's Day and Spring, I have been doing rainbow crafts & activities with my toddler. My son loves to make fingerprints all by himself, so I made an easy rainbow outline for him to follow. Each line is a different color for him to match his fingerprints with. If you do this activity with a toddler-aged kid, I would suggest not putting the arch-shaped lines as close together as I did and instead make them with at least a 1/2 inch in between each line.
His finished fingerprint rainbow.