OK i got IT!, i love this idea what if the lower level building skill was to make a tent, that way we could wander out and go camping for a bit (tent should dissapre after 100% useage), and for cooking - a camp fire (burt toast optional). Sewing could use animal fur from local wild life to dress your char (this completes the hunter system of life). We can have trades and groups of skills that make us a productive and inovative charter. Tents should be used to sleep in, this restores health a 3x normal speed and food is to keep stainma high (endurance). As for clothing well lets just say opossum is in.
For those flying fellows making maps may be the way to go, they could also be tinkers and make compasses.