I love PP but am cheap - lol.
1. I use plain copy paper
2. I shorten my stitch length so it is tiny
3. Use either the back of a seam ripper or "that purple thang" rubbed gently down the seam on the paper side to rip the paper apart at the seam. I use my Long narrow tweezers that came with my serger for pulling the paper off.
4. For tiny pieces that do not have a long seam - I use a moist Qtip and rub it down the seam on the paper side - that generally softens the paper under the stitches and the paper pulls apart perfectly - with, I may add, no pressure on the seam or the pieced fabric
Recently, I have been gravitating to the second method mostly. If I am doing lots of blocks - I moisten two and when I get done with the second one, the first one is ready. You kind of have to play around with how wet the Qtip needs to be - different papers have different absorption rates. Just moisten the stitches and stitch line!!