What should I do with (2) 3015lf's?

[m R g S r]

I'm open to ideas!!
One is in an ss15 that I have no use for and the other is just chillin....

Fun project anyone??

 

[ßart West-VL.]

Send them to me! For free!!
Thanks in advance! 😛

A sealed PPSL would be nice to do some measurements on.
With the option to put in a port for more testing.