These come under ‘Found Objects’ classification, although perhaps I bought one or two at a garage sale.
I love them for their color and the writing on the side, so technically they are not obsolescing from my life, as surely love makes things useful by default?
Obsolescence Project 
I was doing a mental rift about adding some of my glass to your collection; but those pieces wouldn’t have the resonance ones discovered individually, by you, give your assemblage. Like vegetable soup (or anything built) best done bit by bit.
That put me in mind of the short story “Trout Fishing in America, Charlie” by Kurt Vonnegut, which features an artificial trout stream in a mall hallway. Folks could simulate trout fishing by renting a rod and casting into the ‘fake’ stream. The fish got wise to the gimmick and were not biting.
Now, why does that remind me of casting some of my glass in your direction? I think that would only be successful piece by piece, knowing you and viewing this photo. I could then select an object I imagined complementary. (Dropping into this mental slip-stream is the image of “designer” adds of pre-selected “collections” for purchase. Something like “staging” by mail-order.)
Other items you’ve photographed have been passed to you by folks tuned into your aesthetic, artistic and professional life. Serendipity might be involved, but creative speculation seems more useful in adding to your collection. It might be interesting to measure whether items added by others to your “collection” become obsolete more rapidly than items added by yourself. (You’ll need to factor in that you amass the majority of your own “stuff”.)
I find myself missing “unused” collected material that I passed to “other” collections and I wonder if those items became truly obsolete. They must exist somewhere, valued or not. I will eventually tell you the tale of Lindy Michie’s Mother’s quilt, a true story stranger-than-fiction.
Too beautiful to dispose of.
Thanks Peter. They are lovely:)
Yes, that’s the thing – space is an issue. So these lovely object don’t really get displayed. And thus hover been clutter and beauty. I probably won’t get rid of them.
Visual pleasure needs no justification; until, in my case, there is so much that it becomes distraction (also known as clutter). I, too, love glass: clear, opaque,colored… It has a deliciousness no other material quite replicates.