sweet greetings for the littles in your life

remember when you were little and getting your own piece of mail was earth-shattering? to be honest, i still get pretty excited when i receive a hand-addressed envelope in my mailbox. valentine's is a great excuse to send some snail mail to the kids in your life, and we are loving the options below.
it's a dog. in a hard hat. thank you for that, red cap cards. 
rigel stuhmiller brings us dinos & other choice critters of the painfully cute variety.
hello! lucky amps up the neon quotient in these sweet treats.
who doesn't want a la familia green warthog in their mailbox?