After discovering that sheets for Pack 'n Plays are not cheap (and apparently don't come in the correct size for the one we purchased), I realized that my best option would be to make my own. This would be a simple matter of measuring, buying some flannel, sewing a few seams, and adding some elastic. So simple.
Simple -- unless "baby brain" kicks in during the measuring stage, thereby requiring a sudden change of plan after you've already cut your material. Fortunately, my brilliant engineer of a husband suggested an easy fix that worked wonderfully, thanks to the folding capacity of the bassinet mattress. Unfortunately, this also meant altering the waterproof pads to fit in with the new design -- but I think the overall result is even better than what I originally had in mind.
Soft blue-and-white polka dot flannel to go with the Classic Pooh Pack 'n Play we found on Craigslist -- I never would have paid extra to get a Classic Pooh design, so I was thrilled when this one popped up!
And before you get any ideas about gender (blue walls! Blue sheets! Blue playpen!), we painted the nursery before we saw any sonograms, I love to decorate with blue, and I consider blue a gender neutral color. And actually, we're still not sure of the baby's gender. Sorry to disappoint, but that's the way it is. *wink*
And before I get any concerned comments, my old Winnie-the-Pooh bear is just "breaking in" the bassinet for the baby -- I do know better than to leave stuffed animals in an infant's crib. Just saying.
So for less than the cost of one regular crib sheet (though with a few more headaches), there's a neat little stack of flannel in the dresser drawer, ready for a new nursery occupant -- and an occasional midnight change!