Some Guy wrote:
You could rent a lot of storage space or buy and build a small
storage shed for the same amount of money.

If you're a half decent carpenter and you throw enough 2x4's at it,
you'll probably end up with something stronger than you started with.

I wouldn't bet on that. The odds of him messing up the structure are
very high.

If you use 1/4 bolts with fender washers and (or) #12 or #14 wood
screws and pre-drill the holes (and not nail anything together) you'll
have something stronger than the existing framework.

Stiffness attracts load. You stiffen up one section of the truss and
another area, maybe on the opposite side of the house, will have its
loads drastically affected. You're intentions are good, but you're not
helping this guy.

I bet your existing wood is full of splits because of the hack job
that is usually done when cutting rafters and pounding over-sized
nails in.

The house is built with trusses. No one was cutting any rafters. And
the trusses are, dollars to donuts, held together with the gangnail
plates.

R