I always thought he just wore some ratty, old, reallyreally worn black jeans, a generic black bandana & some sort of work boot. But everything has to be dusty & aged really well.
Most of that you could get at any store. Michaels has bandanas pretty cheaply. The red rag looks like a shop rag, the kind mechanics use, you could pick that up online or at any place that sells car stuff, Auto Zone, Pep Boys, Harbor Freight, etc. but you'll end up buying 50 or more that way but they're pretty useful for lots of things.
As for the knife & sheath, I'd just check the costume places & shops online, I'm sure they'll have something close enough.
These are good reference pics if you're not going the poncho route. You could also pick up one of the action figures for reference too.
Most of that you could get at any store. Michaels has bandanas pretty cheaply. The red rag looks like a shop rag, the kind mechanics use, you could pick that up online or at any place that sells car stuff, Auto Zone, Pep Boys, Harbor Freight, etc. but you'll end up buying 50 or more that way but they're pretty useful for lots of things.
As for the knife & sheath, I'd just check the costume places & shops online, I'm sure they'll have something close enough.
These are good reference pics if you're not going the poncho route. You could also pick up one of the action figures for reference too.

