The next time you have green onions, don't throw away the white ends. Simply submerge them in a glass of water and place them in a sunny window. Your onions will begin to grow almost immediately and can be harvested almost indefinitely. We just use kitchen scissors to cut what we need for meals. I periodically empty out the water, rinse the roots off and give them fresh water.
For cleaning infuse white vinegar with orange peels to make it smell better but also to harness the cleaning properties that citrus fruit oils contain. Worms don't like orange peels so I've been hunting alternate uses, and have lamented the vinegar smell after a good scrub down.