You simply put a pool noodle on the edge of the bed under the fitted sheet to keep a toddler from rolling out of bed. I probably wouldn't have tried it six months ago when Reed was fresh out of his crib, but it worked great for this summer's vacation. We use a pool noodle bed rail for the big boy bed at Grandma's house too!
Isn't that the best idea!? I heart pinterest. :) If you hadn't already seen the noodle idea, sure hope it comes in handy for you and your tot!
And here is the rest of Design Dazzle's fun list of Twenty Ways to Use Pool Noodles.