
Simple cards, one with a bouquet of flowers, other one with two kittens.
Inside there are pop-ups: A flower pop up in the bouquet card, and a birthday cake in the kitten card.

Flower pop-up is based on the V-fold, cake is based on the box method. Exellent tutorials for pop-ups can be found at Extreme Cards and Crafts:
here's the V-fold.