I had no logic analyser (It took me a lot of therapy to admit this) but then I got a beautiful HP1615A from the 70's that was used to design the dutch traffic control computers. To bad ROM 0 is dead as a dodo and no copies to find. While working on that I missed ,......you guessed it, a Logic analyser.... To be short, the HP is still dead but I now have a Tek 1241A with a big travel-style tektronix bag with the pods, cables, grabbers, rom and ram packs, manuals options etc)
That was nice when I had to repair a measurement receiver with digital problems. But it could not decode protocols so now I have a zero+ too. But I needed to test the RS232 too, to see if I could find calibration data. I could not get it to work (no manuals available) No problem, a friend gave me a compass microtest compas network analyser. Very Obsolete but it has a very handy RS232 monitor/analyser and helped me to solve that.
The best thing, a bunch of new toys to play with that are really usable too, and no guilty feelings or the evil eye of SWMBO.