THis is such a great idea, reusing your jeans to kid jeans. Do you need to resew the leg width to make smaller for your kids?
If you decide to send clothes to other crafters, I'd happily pay shipping for some jeans and t-shirts (especially solid colors, specifically white)! I'm a fluffy gal so once I wear holes in the inner thigh part of my jeans, I use my kids' jeans/pants as a template and make them new pants from my old jeans. I line up the bottom of the pant legs with the bottom of my jeans (assuming they're not worn out) & then I don't have to worry about hemming! Throw an elastic waist on them and voila! 20 minute pair of pants. Then I let my kids decorate them with fabric markers & puffy paint!
For the t-shirts, I re-purpose the body of the shirt into a skirt for my daughter. If the shirt is white, we tie dye it. Larger men's shirts are good size for kids' sleep shirts, cloth diapers, or baby/toddler pants. So yea, if you'd like to unload some quick, pm me.