A dimmer would work if you're using incandescent lighting. Use bulbs with heavy filaments (rough service or 130v) and a quality dimmer or you'll get a lot of noise off them.
We (my stoner friends and I) used to go out to the Pink Floyd laser light show at the Minneapolis Planetarium quite often - great memories!
I am overcome with joy at seeing you. However, that is a sausage in my pocket.