Batting scraps are great for small projects like mug rugs or doll quilts, just butt the sides together and they'll do great.

I know some quilters save all their scraps of thread, fabric and batting and put them into a fabric bag - when it's full they sew it closed and it's a nice doggie pad for their dog or for the animal shelter.

With the cost of batting, I keep mine and sew the bigger pieces together.

Yes, esp. large scraps. I do join those together. I've used the new batting tape, but find it doesn't always stick well, so most of the time I zigzag pieces together. Small pieces of batting work well for placemates or coasters.

it works! its really awesome and I keep all my scraps

I save all of it, because the small pieces i use for stuffing for a toy.

I do keep if they are atleast a strip of 10x3. Use them for Ornaments and mug rugs.

I save my big scraps and zigzag them together. I also keep some of the small ones. Absolutely great disposable dust cloths and if you're going to throw them away anyway . . .

I only keep the bigger pieces.

I use a mending stitch. It is like a zig zag only it stitches about 4 stitches on the zig & 4 stitches on the zag. I put the edges together & don't overlap. It works great!! I've extended batting when I've needed to on many quilts.

Hi--Lorraine Stangness (Magical Machine Quilting & Embellishment) recommends joining batting scraps together by overlapping 2 pieces of batting 4-5 inches and cutting through both of them with wavy 'S' curves (think scallops). After removing the excess (overlap scrap after cutting) you hand stitch the S seam with long overcast stitches. She says you needn't be afraid to join more than 2 pieces of batting together. I haven't tried this yet but I have lots of batting scraps for testing.