Million Dollar Question: do you have sockets for all of them?
Beside novals and octals, any other sockets, once very popular (rimlock / locktal / 7 pin / "U/A Technology" , etc) are now impossible to find.
No sockets no builds, as simple as that.
Unless you are very handy and improvise them from printer connectors and such plus some clay or epoxy paste.
Then you will have to design your own stuff, they won't straightbfit in , say, an old Fender circuit.
It all depends on commitment and available time.
I bought 1000 Ecc/Pcc189 dual triodes for peanuts (less than $1 each) some 2 or 3 years ago, I know they are used in Audiophile preamps, with the idea of making either some tube distortion pedal, some hybrid preamp or some hybrid amp.
There they are , still gathering dust, mold and spiderwebs, I haven't had a free time slot needed for that.