To be fair, I think the best project would be a single skin foil kite.
Being a fortunate enough to see two prototypes in action, and man, it is a game changer.
It is. The simplicity and safety of a single skin kite is just unmatched for 99% of us, particularly for a HF.
They are ultralight, do not provide lift, hence very safe. So small in a bag, one wouldn’t believe.
If not jumping or in tricks, a kite for masses. Skiers, land boarding, u name it.
Bridles would be a bit of time to make tho. But, one might specialise just in making bridles for a particular kites, and sell it online