A couple of years ago, I made this quilt for my son's bed. I wanted it to have a matching bed skirt, too, especially since the underside of any little boy's bed is probably a war zone. My mom figured out how to make this one and I love that it always lays flat and stays perfectly even.
A few months ago, she made me this bed skirt for my daughter's crib. She used the same method, except added some pleats for a girlish touch. Again, I love how it stays put and floats perfectly above the carpet.
Staples. Instead of making an actually bed skirt that lays under the mattress, she just made the panels that hang down and we stapled them on to the frame of the crib. Easy, right? (Sorry about the dust--yikes!)
The bed skirt stays put when I have to pull out the mattress to change the sheets. I love that! Also, since the back side of the crib is against a wall, we didn't even bother to make a panel for the back. Just measure the distance from the bottom of the crib to the floor and add a couple of inches for your seams. The measurements are very forgiving, because you choose where you want to staple the fabric on. Those are the kind of projects I like--forgiving ones.
Oh, and mom also made these adorable curtains to match the bed skirt. I love the use of jumbo black ric rac in these.