Thank you all for your suggestion- and yea, sagging is what I'm worried about. I thinnk I'm going to make it out of wood. A friend of mine has some sheets of wood that are about 3in thick (I have no idea why he has it), and said that he would give it to me- and that he would like to help me build it.. Well, in all honesty- I'm not sire I will be the one buiding it. It was the plan, but then my boyfriend, friend, and step-dad suddenly got all macho and are now saying how since they are guys and I'm a girl, THEY should build it for me the cool thing about being a girl.. But then again, I wanna buils it since its for MY babies!!!

I was just going to buy one, but I'm having trouble with finding any that I really like.. So, thats why I'm comming here- because a lot of you have built them! And yea, I was going to get some tubs before I started building, like you said to help with the measurements.