I posted some pictures in the previous posts here, and the lens I used is a 400mm f/5.6 Canon EF lens which I bought in 2001. I realized this was one of the older things that I still have and use. Yesterday as I was walking outside on a cold day, I realized that the mittens I was wearing, which I've worn a lot the last 10 winters, are probably similar in age. Other than a couple of guitars, I don't think I have much else that old. Everything wears out or becomes obsolete¹. Boo.

[1] I also have my old Canon EOS-1 35mm camera. I haven't had the patience to use it in at least 15 years. And other lenses from the 2000-2001 era, which in recent memory I've only used for shooting video with the (newer) EOS-6D.