I have my old hand-built machine that has WIn98 (SE) on it and which I also have a custom-configured DOS Boot disk for. That can run most of the older stuff.
I also acquited a second Win98 machine (free as it happens) which has the the specific hardware that a lot of the mid to late 90s games required to run. For example Resident Evil (the first one) won't run properly on my hand-built machine because the graphics card doesn't fit the narrow "required" list.(the best I've ever got is black blocks around the animated graphics) This second machine runs it fine.
I also have a Commodore 64 and an Amiga in the attic but I'm guessing that isn't what you had in mind.