Dunno if this will help, but there are codes out there for:
http://www.carparts.com ($30 off first $100 purchase - I think this is automatic, no code needed; they do have a tool selection there) - go through dash or bonustree for additional 12% rebate
http://www.amazon.com ($25 off $200 purchase w/code AMZN25PFTAPE or $10 off $100 w/code AMZNHUNWTAPE or check out their outlet sale on tools for deep discounts) - go through bonustree for additional 5% rebate
http://www.cornerhardware.com ($20 off first $50 purchase) and
http://www.ourhouse.com ($15 off first $30 purchase) - I wasn't sure how to post the link to those coupons but you can find the links on
http://www.1bargainworld.com/homegoods.html and go through bonustree or ebates for additional 5% rebate on cornerhardware or get 7% ebates rebate for ourhouse
That's the best I could come up with as far as combining rebates and coupons. If you can't find a coupon for the store you want to shop from, at least check out
http://www.drcreations.com to see if the store participates in a rebate or incentive program.
Good luck!
reford