The amount of variety will be limited, but the savings could be well worth it; by choosing a remnant, you could save anywhere from 10% - 90% off the price of a slab.
Anything you were able to salvage from your demo may be saved and desired for resale by Habitat for Humanity in one of their ReStores. Find out more here.
Got a sledgehammer and a reciprocating saw? Now all you need to do is order a waste container from a demolition company and start swinging! Be sure to not take out any load-bearing walls, and don't cut any
live wires. If the risks seem to high, then you may want to hire a professional.
First of all, you'll keep your contractor happy by keeping them busy when they're usually slow. Make sure you find out if the contractor is willing to give you a discount for starting late (before or after winter holiday).
Finish on Your Own
Doing things like caulking (if you're good), attaching kitchen hardware, or other finishing work can save you a bunch of money - The cost of having a whole crew on-site doing finishing work can add up quickly.