What to do with a CK722 in 2024?

[kf4rca]

When I started fooling around with electronics, the supply of CK722 transistors had already dried up. Pretty much the same with 2N107 transistors.
But the guy at Radio Lab had 2N217 transistors for only 99 cents. They had long leads which was perfect to my style of construction.
It was an all afternoon trek to Radio Lab (next door to WCSC AM-FM-TV station) and back home but it was worth it!