Inspired by Caron Lindsay on facebook, and being the kind of person who can laugh at themselves, I suggested these:
a) None. Lib Dems don't change anything.
b) None. The blub has to be given the liberty to change itself. We'd deny it the referendum to give it the freedom it needed though.
c) 1000 - one to do it, the other 999 to point out that Alex Salmond didn't do it first.
d) None. Lightbulbs, like communties, can't be changed - simply regenerated.
e) It's funny, but since the Holyrood elections it's been very difficult to find any Lib Dems around...
f) None. The Big Society will do it.
g) Remember Iraq! We're against lightbulb regime change!
h) Is it the blub that needs changing, or is it us?
i) It doesn't matter...the lights went out on us last May!
Please add any amusing (and hopefully original) ideas below!