An ostrich feather duster has a bunch of ostrich feathers in it for $5.

A cheap 2 wire extension cord has all the ribbing wire you will need for many years.

A walk around the city park lake will get you a lot of duck and goose feathers.

Find where the buzzards in your area roost and you will have some great feathers, found on the ground,for thorax covers and biots.

Bungee cords will have a life time supply of rubber leg material.