|Over time, I've tried many different ways of marking the right and wrong sides of fabric after the pattern pieces have been cut out. Safety pins, chalk, etc., all have been lacking.
While cutting the pattern for my last project, I tried using some leftover blue painter's tape from a Home Dec project. The tape sticks very well and is easy to write on. When you pull it off, it leaves no residue, and doesn't harm the fabric.
(I used Scotch-Blue Painter's Tape-3M).
Update 7/7/09) - in response to regine's comment - I called 3M today for more information about this product. They said" this tape has a special release agent added to the adhesive, and it is NOT masking tape. You should be able to leave it on for 14 days without damage to the surface."
I've posted a picture of my Molly cat helping me sew the Amy Butler Frenchy Bag. You can see that she's laying on the cut out pieces marked with the blue tape! A roll of this tape is on my cutting table now, with other indispensible notions!