A tossup ...
I just received some eBay goodies. A Positron FFS rear derailleur shift lever and a NOS rear derailleur shift cable to go with it. Both bought after I decided that the kludged* repair I made isn't fitting for the 1980 Schwinn Suburban I'm riding lately.
I just bought (but haven't received) a repair stand on Amazon because I'm tired of working on a pair of plastic sawhorses.
* If you understand the plastic sawhorses, you'd know what a 'kludge' is. In this case, a barrel shaped cable connector screwed on in place of the original end that broke off. This necessitated hogging out the socket in the shifter lever to accommodate the larger diameter barrel. Also, cutting off the screw head to fit.