What is your definition of a "scrap" of fabric?

between 1" to fat quarter.

2" plus

Gosh, good question.

For me, a scrap is anything that is left over from another project, and I don't foresee using it in another project. Often that's 1/2 yard or less, but sometimes is larger cuts. I have a 3 yard scrap right now, because I bought it for a project, but changed my mind, and I doubt I will use it in something else, so I am willing to cut it up for scrap projects. Otherwise, my heirs will be giving it away when I die, because it won't get used.

Less than fat quarter, but at least 3/4".

I have a basket full of schnibbles, 1/2" or less. NOt sure if anyone here uses anything that small, else I will use as filling for something.

Wonder if I can matt it into felting? You know where they wash wool until it matts into a felt type layer, I have seen other fibers used with the wool.

Just plain, leftovers.

Great question!! I just bought a new "scrap" plastic tub yesterday. I plan to keep anything over an inch that way using two 1/4" seems I'll have 1/2" left. There are a ton of quilts that need pieces that small. I also really like the projects people on here have done using leftover selvege pieces. Then just use my own judgement on how big to go. I think I'll get a larger tub for the bigger pieces just so I can keep them seperate. My daughter has used all empty tubs around her to store her stuff while she's on deployment so naturally Mom has to go buy more. Our daughter joining the Navy has cost us a fortune! ;-)

1.5 inches to less then a FQ

Generally speaking, if one of my kids "borrows" something, I may as well not hold my breath waiting to get it back.