These are easy to make from scratch, especially if you use prequilted fabric. Just measure to see what size you need.
Cut the prequilt to the size you need. Fold a piece of a coordinating fabric the size you want the pocket. Sew it to the sides, sew down the pocket you have made to make two or three smaller pockets, bind it all and you've got your pad.
If you have an embroidery machine and you want to make a mongram, use non-printed prequilt.
I made one for Christmas exchange and it was well-recieved. froggyintexas