Hi fellow travelers! I hope you are all exploring! I wanted to post a tip I use constantly to find ways to travel for cheap. I love to search www.groupon.com for their getaways, they have some of the best deals for traveling in the United States and overseas. Some of their deals even include airfare which is great. Some of the most recent getaways that I have found which would be great for spring or summer breaks are to major theme or water parks:
LEGOLAND California Resort– Carlsbad, CA, $69.00 for a single day SeaLife and Park Hopper Pass
LEGOLAND Beach Retreat-Winter Haven, FL, $99.00/night includes meals
Castaway Bay– Sandusky, OH, $98.00/night
The Denver Aquarium– a $50.00 Landry’s eGift Card and 4 all day Aquarium Adventure Exhibit Wristbands for $99.00, this is a total steal considering your kids will want to eat in the Aquarium restaurant after they go through the exhibit. 
Groupon helps you do the fun stuff for not so much green stuff, check it out periodically to see what deals you can find!