For my queen size bed I found that the corners of the sheets were always coming loose during the night. So I go some of these elastic things that have the clips on either end that you clip on the sheet at the corners. Well this didn't really do the trick either.
So I took and cut the clips off leaving just about 2 inches of the elastic still attached to each one. I ended up with 8 clips. Then I sewed the clip to the bottom side of the mattress, going in about 4 inches or so with each one. I put them at about the same spots where they were before I cut the clips (either side of each corner).
Now when I put the fitted sheet on I clip it to each clip. It holds the sheet in place nicely till I'm ready to wash and change sheets. No more bunched up bottom sheets!
By Cricket from Parkton, NC
This page contains the following solutions.
To keep your bedding from falling on the floor, and making the bed in the morning a snap, just use sock tape (used by hockey players to keep their socks up) on the two bottom corners of the covers.
As the pillow top mattress have become more popular, it may be difficult to keep your older linens in place. This is a page about keeping sheets on a mattress.
There are a few good suggestions on this page for keeping your bedding looking nice. Whether the issue is flat pillows or pillows that won't stay in place as arranged.