It's not crazy, per se, but I water house plants using 1/2 full, leftover glasses of water (filtered through the fridge, NEVER store bought water) instead of pouring them down the drain.
Also, years ago, I started keeping the master bedroom and closet lights off during my pre-office morning preening. Figure at least 30 minutes x 5 days a week = 2.5 hours a week....
I rinse dishes, stack them next to the sink, turn off the water and THEN load the dishwasher.
Insurance deductibles have been increased, our mortgage interest rate was reduced by half earlier this year, energy vampires are unplugged, I do (color) my own hair, and work out at home instead of belonging to a gym.
Pulled the land line and internet (DH pays for satellite-if it were up to me, we'd pull that, too). I'm a couponer, including my booze, and I no longer by CDs/DVDs (though DH still buys the latter, I just smile politely, knowing my retirement fund is happier because I don't).
Instead of going out, we invite friends over to BBQ.
Total annual savings, prior to the home refinance was over $11,500.