If you walk into your local kids' supply store, you'll find all manner of different rail guards to keep your child from falling out of bed.  Some are extra-long, others fold away under the bed...and they're all expensive.  Before you go buy one of those contraptions to screw into your kid's bed, you might want to check this out...

I don't have little ones yet, but I'm definitely keeping this trick in mind for the future!

Source: buzzfeed.com via TRI on Pinterest