Holy smokes, this do-it-yourself AA NiMH battery pack that you posted many moons ago is quite interesting. I don't know how I never found this before... I guess I should have used the forum search function.
Nevertheless, thanks for such a detailed guide with both information as well as pictures - I was able to view the pictures by accessing outdated page archives through
archive.org.
I'm familiar with the battery reconditioning process, but have never actually attempted to create my own battery pack from such various items. Sounds like it'll be a fun project to tackle this weekend with my elderly father. He loves creating beneficial gizmos and gadgets.