from where will you draw your resources? You don't need just fabric, but thread, batt, tie material.
A caveat about tying, do it no less than 3-4 fingers apart, tied quilts that shift with wear and wash, don't last long.
If you decide to donate outside the church, talk to those people and see if there is an actual need there.
My mothers nursing home had a room stuffed with afghans and lap quilts.
Our hospital doesn't accept home made goods, they just aren't sanitary