We made a quilt in our Good Samaritan rotation. We asked a couple of ladies who quilted in the congregation to lead it and they brought their sewing machines.
The kids, especially the boys loved it.

This is the basic idea, which our lovely quilting lady came up with. We especially liked the way the children had to swap and share their pieces of fabric to get the final product.

We started with 10" squares in blues and greens. Members of the congregation had donated cotton fabric in a variety of colours.
Then we had a lot of 8" diameter circles which had vsioflix (iron on sticky stuff) already stuck on them.

Each child chose a square and an contrasting circle. They ironed the circle to the middle of the square (under adult / teenage supervision).

Next one of our quilting ladies cut the square/circle in half with a rotary cutter. - the kids were'nt very happy at this stage.
Then they had to swap one of their halves with someone else.

The two halves were sewn together on the machines, either by the children or an adult depending on age, class size, time etc. Some of our older boys had never used a machine and thought it was great.

Then, again the squares were cut in half, but the other way. And swapped again.
Then sewn together again.

Each child ended up with a square with a circle in the middle, with 4 different backgrounds and 4 different circle quarters.

Our adult helper sewed them all together after the first few weeks (we ended up with enough to make 2 quilts) and she backed, bound and quilted the quilt for us.

We gave them to a refugee family that one of our congregation knew.

It was a fairly labour intensive workshop, but the quilting ladies loved coming and sharing with the kids, and the kids got a real sense of achievement and participation.