I had not purchased any because they were 15.99. Since I had a coupon for 50% off. I thought what the heck! I didn't open the pack until I got home. I had no idea they were little bean bags full of what ever. Silly me!!!Now here is the solution. You do need these Drtiz ones to keep your fabric from sliding, they are heavy little buggers (or you can use your tape dispenser). If you have been sewing for a long time you have at lease 4 of the old ones. They used to come 6 in a pack.
Here is the solution: Go to home depot and pick up a few of these nuts.
They are under 1.00 each they are great weights for the pattern pieces. However, they will not stop your fabric from sliding off the table like the Dritz weights. But if you buy a few like I did you probably wont use pins again.