Random thing I found out: Ricoh and Fujifilm batteries
I fished out my Fuji x100t so I could charge it up and happened to eject its battery to see what model number it was, since I still haven't bought additional backup batteries for it (how??). I realized it reminded me of some other camera batteries I had, which ended up being for the Ricoh GXR, an older camera I bought used in June as one of my birthday presents for myself.



Side-by-side comparison of Fuji NP-95 and Ricoh DB-90 batteries
How strange! The GXR came out around 2009, while the x100t came out in 2014. And they're from two different manufacturers. Well, I guess maybe there is more overlap in camera batteries than I realized. I just was pretty surprised by this. 😅
Funnily I bought extra batteries for the Ricoh GXR because I thought maybe the one that came with it might be older and not hold as much charge reliably, so I guess I have a little gaggle of batteries I can share between the two cameras. Nifty.