Don't have many ingredients on hand, but want to try something homemade now? Mix up a solution of 1 part vinegar to 3 parts water and use it to disinfect your kitchen surfaces. I have read that vinegar kills germs as effectively as bleach. It removes odors and after it dries, it doesn't leave a harsh chemical smell. In fact, it leaves no smell at all.
You can also use vinegar and water solutions for cleaning sinks and toilets, spraying down a shower after use and even cleaning windows. Play around with the water to vinegar ratio for each use until you find the strength that works best for each job you are doing.