{click on the image to view sources}
Fun decor ideas: Umbrellas! One over a small bouquet of flowers at each table strung with glass beads for "raindrops", umbrellas hanging upside down over the gift or food table, a closed umbrella filled with flowers and birds nests to greet guests at the front door. Using wheat grass at each place setting or as a runner down the food table is also a great way to bring spring into the theme. Plus, you could tuck in photos of the bride and groom as an alternative to frames or photo stands.
Fun finger foods for a spring shower: egg salad in egg cups, mini pot pies, lemonade and petit fours.
I chose tulips as the main flower simply for the variety of color and because they transition nicely for an April shower/May wedding, but any spring blossom (daffodils, daisies) will do. Not to mention you can find these adorable tulip napkin and plate sets here. Finally, send your guests home with pretty paper tulips set atop a real bulbs in a votive for their own piece of spring.