Mandy, you could get some of these sawhorse brackets...
Then the next time you're at a lumber yard, ask the yard hands if they have any extra runners you can have.(that's the 2x4s under a bundle of boards) I used to work at a lumber yard, and to them, the runners are thrash, I gave them away all the time. The beauty part of it is, they almost don't need to be cut, just fasten the brackets and go. Or you could cut the legs down to a size to suit your needs.
Johnny
BUILD THREADWinning is not a sometime thing; it's an all time thing. You don't win once in a while, you don't do things right once in a while, you do them right all the time. Winning is habit. Unfortunately, so is losing. - Vince Lombardi


