I am really glad I followed this thread, because I was inspired to do something I have been meaning to do. I just sat here and catalogued my gloves in an Excel spreadsheet. Three dozen gloves, more or less, depending on which ones my sons are claiming at the time.
At this point in my collecting career, it was pretty simple. I sat here and remembered all the gloves in the house. My spreadsheet has five headings: Manufacturer, type of glove including model number if known, Righty or Lefty (I have a lefty son and some lefty gloves, so I want to keep up with this in the future as my collection grows), "owner" (does it belong to me, my oldest son, or youngest son? and that designation may be fluid and changing), and special notes. So far, it's a pretty clean little spreadsheet. But seeing it in black and white somehow makes my collection "official," and makes me more proud of my little collection!
Soon, I will add pictures.

Yes, I still have my first glove.