Small vacuum cups, and alternative vacuum sources

    I'm in the market for some small (~1" dia), soft vacuum cups with a
decent degree of bellows to them (say, 25-50% compression), and having
the dickens of a time finding any w/o resorting to industrial supply
warehouses.  I'm only going to need two or three.

    I want to pick CDs off a spindle, so the cups don't need to pull much
vacuum, just a few ounces' worth of lift.  I'd also like to avoid adding
a full-size vac pump or pneumatic source to power venturis -- it just
seems like overkill.  I've been looking for alternative source of
vacuum, but not having much luck.  Something like a servo-driven version
of "squeeze and release" vacuum cups would work, if that kind of thing
exists in this small size.  I've also played with the idea of trying to
create a sort of servo-driven "vacuum syringe," where I would drive
something like a LEGO pneumatic piston with a servo to produce some
temporary vacuum (I should only need a few seconds' worth).

    Anyone ever see anything like what I'm talking about?