Clothes can be a big saver if you shop at thrift stores. All my hiking shirts are 100% polyester button downs from the 70's. I also have found a ton of 100% wool shirts and long handles. I recommend hitting up the ones in wealthier neighborhoods. Ive picked up jackets and shirts from Patagonia, Smartwool, and a brand new Precip jacket.
Climb the Mountains and get their good tidings...
-John Muir