During the school year

When Schools out! Sewing Camp is offered during the school year for school breaks like...  winter breaks, spring breaks, institute day, some holidays
This is a good opportunity to sign up for Sewing Machine Safety or a Sewing Machine Class.  They learn the in's and out's of the machine and are already familiar with a sewing machine for more camps and clubs
"Practice makes perfect" mom always said!

I often hear, "winding a bobbin is so satisfying"

Breaking a needle is a rite of passage in the world of sewing

Seam ripping has been known to calm the heart of a child.
Not to mention once they figure out that threading the needle thing, they find they really love hand sewing.