I've always really liked this idea. I already do the toothbrushing thing. Hygiene's a good category to pull from. A few others I use:

• Feeling of cold air
• Warmth of sunlight
• Warmth of water, be it bathing, dishwashing, etc.
• Smell of clean laundry
• Smell of coffee/warm beverages
• Feel of wearing freshly cleaned clothing
• Feel of a fresh shave
• I often have long hair, and notice that my hair actually starts to feel heavier the longer it goes unwashed, so, the lightness of freshly washed hair