I've been collecting OEM chainsaw "carcasses" for my working saws, at a couple for each Stilh series I run, some could be made runners, most I got free.
Besides that I am gathering NOS OEM "critical" parts: carb kits, gasket sets, P/Cs/pistons/rings, manifolds/hoses, air filters. I'll wear out before my saws will.
I have NOS stuff for 1122 (064/066), 1119 (038), 1121 (024/026), 1120 (009-012), 1118 (028), and 1125 (034/36) series Stihls. Two boxes full of Stihl RS/RM chains and a bunch of 3003 mount bars. Also some homie stuff for my first saw, a red super XL Dad gave me.
I'll use Chi-Com stuff for plastic covers/buffers, even used one Chi-Com recoil assy
Not newer saws but easy to fix/work on (except homie) and get the job done. I'm covered 40-90cc.
No offense to OP/
@weimedog , if you can make it Chi-Com run reliable on the cheap great. But I bet there is a lot of non-Chi-Com parts involved. And I loved the old IH 1066 tractor logging and the "snowplow"!