I've got to concur here, Dwight... under the circumstances, the V2 programme seems like one of the least bad things that could have happened, even though its basic purpose was a bad one. It is easy to imagine the war being longer and worse if no resources had been spent on the V2, or if the technological ingenuity that went into it had been applied to more effective weapon concepts. Most of the tech in it ended up benefiting the postwar powers much more than its original builders, clearly a good thing. I find it easier to appreciate the V2 as an impressive achievement - several advanced technologies, for the time, integrated to make an entirely new kind of thing - precisely because it wasn't militarily or terroristically particularly effective.
(I say this even though I'm about 400 yards from the nearest place hit by one, and you can infer the damage it did even now from the places where older buildings abruptly stop. Scary stuff from our perspective, it must have made a hell of a big hole, but it cost a lot to make that hole and didn't alter the course of the war much if at all)
Anyway, analogue computers. There was a really good demonstration of them at the National Museum of Computing at Bletchley - I really hope they make it through the current fuss, I've donated - and I would jump at the chance to refurbish an old one, but I really don't know what I'd do with it. I dimly remember building single integrators and maybe differentiators? from op amps at A level (high school?) but somehow never needed one since. I'll keep my eye out for an excuse! Thinking out loud here, it seems kind of silly to build an analogue computation and read the result on a digital oscilloscope

but it might be more fun to use one to control something physical.