Some of these things, I've had for over 20 years. My Dad was still alive when I bought them. (And he rolled his eyes about my buying habits at Wallacks and DeSerres because...well.) Anyway, I'd expect all of them to be dried up and out of order permanently because of the age issues.
Not so!
Some testing over the course of this morning whilst checking assorted job boards for more conventional day-jobs (I can't give up on that either!) has proven some of the oldest of these to still be somewhat functional. I'll try to work up a list of effective brands later today or tonight, okay?
Meantime, lunch calls.