If it ever seems like the refill/pen is dried but you can clearly see ink still in there on a rollerball or gel pen, dip the tip in some really hot water for a few seconds and it'll revive most refills.
12 karma · joined March 12, 2018
And there are pen shows around the world where collectors and enthusiasts come together. e.g. sf pen show in the bay area (sfpenshow.com), LA Pen show (http://www.lainternationalpenshow.com/) which as been going for like 30 years, and more - many more.
Try going to the forums - fountainpennetwork.com or fpgeeks.com to get interest in your blotters. I've seen rocking blotters sold by J. Herbin, so they still exist.