One of my favorite stamp sets from the Summer Mini Catalog is the Watercolor Trio (#117050, wood and 120084, clear). Here is a 3x3 card using the colors Poppy Parade, Night of Navy, and Sahara Sand. Stuck on a couple of little pearls (Basic Pearls #119247) and spritzed with Frost White Shimmer paint (#116854).
The Motorcycle (#117657) a la carte stamp is a great "guy stamp". I find most of the cards I do are "girl" cards so this has been a fun stamp to have. I also used the Presto Patterns Paper (#117175) on this card and sponged on Basic Grey classic ink (#109120) and then spritzed the card with Silver Foil Smooch Spritz (#118771).