Help! I need a spacerock sound!

I am a guitarist, and I am fine with my guitar equipment, but I need a little something else. I am allready hoping to get a theremin real soon, which through my effects would sound like Hawkwind Spacerock etc... but I need something a bit more like a VC3 also (but a lot less than £4000). I am not really wanting to go over £100, so it must be  a small little something, that would only get used once or twice per concert, but would be interesting to hear. I like the VC3 sounds, but technology has moved on since the early 1970s (its got smaller!!!) so what is out there? I could make a kit, my theremin is going to be in kit form anyway...

Also, not a keyboard! Just a box with a few tricks inside, like osccilator, trem (square wave!!!!). I have been looking at analogue synths, but they are too expensive. I don't want to play a vintage keyboard, I just want to make white noises etc...

Edited by hawkbrock

I wish I was rich! Oh well, Theremin for the time being lol..... or think cheaper!

Well, why don't you try something cheaper like a Digitech Whammy, Boss Super Shifter (expression pedal is essential) or Boss Bass Synth (works on guitar)?
They're much cheaper, and combined with a Delay, you'd be able to make some really crazy  Space Rock sounds with relative ease.