Are you desperate to come up with an out-of-the-box idea for your kid's upcoming summer birthday party? Check out these four super-fun and simple themes that your kiddo's friends will be talking about for the rest of the year!

1. Field Day Party

Don't have enough room in your house to accommodate a hoard of hyped-up children? Head to your local park and set up a field day! You can get the children started with a good ol' fashioned game of tag, and then organize a few classic games like tug-of-war, Red Rover, a three-legged race, and even a pinata. Meanwhile set up an activity-free area for picnic blankets, food, cake and presents.

Food: Whip up classic picnic foods like sandwiches, pasta salad, chips and dip. Also, sliced watermelon is a must! Oh, and bring plenty of water –– the kids are going to be exhausted from running around all day.

Party Bags: Stay on theme and give the children a to-go bag full of inexpensive field day supplies like a Nerf ball, a plastic jump rope, and maybe even a frisbee!

2. Drive-In Movie

Turn your backyard into a movie theater! This is a great idea for older kids who are having a sleepover –– just find as many comfy chairs as you can (borrowing from your neighbors never hurt), and set up a projector in the backyard. Then turn on a classic children's movie, hand out popcorn, Red Vines, and other movie theater snacks, and you're good to go! You can even design the party invitations to look like ticket stubs –– and if you really want to get creative, the "coming attractions" can be a slideshow of your kids and their friends.

Food: We recommend a simple pizza pie for this one. And instead of cake, why not whip up milkshakes and serve them in Slurpee containers?

Party Bags: Head to a budget friendly store like Target or Best Buy and hit the $5 DVD section. Pick out a cheap movie for each kid, throw in some Raisinets, and voila! Best party bag ever.

3. Craft Party

Does your son or daughter love to get crafty? Throw an outdoor DIY party! We suggest setting up about five different craft stations (make sure an adult is in charge of each station) where kids can get their art-on. The possibilities are endless, but some winning ideas include tie-dye (each kid gets to keep their shirt!), spin-art, shrinky-dink necklaces, painting pre-made wooden birdhouses (you can easily buy them at a craft store like Michael's) and making homemade wind chimes using scavenged seashells or utensils.

Food: In the spirit of DIY, have each child make his or her own personal mini-pizza at the beginning of the party. An adult can be in charge of cooking them while the kids get their craft on!

Party Bag: Send each child home with all the tools they need to make a collage –– an inexpensive set of paints, some glitter-glue, feathers, and a cute set of stickers.

4. Pool Party

Credit: iStockphoto/Thinkstock Photo: Girls In Pool

Best. Summer. Party. Ever. Either turn your backyard into a water park by setting up a couple of inflatable paddling pools and a slip n' slide, or head to the local pool for your bash. Either way, ask each child to bring their swimsuit and a change of clothes, because a water balloon fight is a must!

Food: Nothing says pool party like hotdogs and hamburgers! If you have the soiree at your house, you can easily grill out in the backyard while the kids are splashing around. Otherwise, prepare the food in advance and bring it to the pool with you.

Party Bags: Give each kid their very own mini squirt gun and a bag of water balloons so they can recreate the party in their own backyard!