It all depends on what kind of space and dimensions you have to work with. You could certainly add a "skimmer chamber/vessel" that say one of your overflows drains into, skimmer sits in, and then drains into your sump... but your post is very vague to even start to suggest anything sensible.
If you have, post up some pictures of the setup, and what you have to work with.
You could get poly containers, or abs crates etc... custom glass and even custom acrycic aren't terribly expensive when kept simple.