Another thing that simplifies the card making process when you're in a pinch for a quick card is a go-to color scheme. My go-to color schemes for kiddo cards are turquoise, orange, and bright green; olive, blue, and pumpkin (for boys); and rose, saffron, and chocolate for girls.
SU! Cardstock: Tempting Turquoise, Green Galore
SU! Stamp Set: Sock Monkey
Cuttlebug Embossing Folders: Happy Birthday, Spots and Dots