Pack your motorcycle wash kit so you can carry it into a restroom in one hand. You should be able to find the toothbrush without emptying it onto a wet counter. Start with the products you use at home, reduce the quantities to suit the trip, and give anything that can leak a second layer of containment.
The main packing decision is whether you will have facilities. A campground shower makes a towel and clean clothes useful. Several nights without a toilet call for equipment that a toiletry bag cannot replace. Sort that out before debating folding toothbrushes.
Make handwashing easy to do
Keep soap and hand-cleaning water accessible before you open the food bag. If the soap lives under your sleeping bag, a quick lunch stop now involves unpacking half the bike. A small bottle with a cap you can operate one-handed is worth more here than an elaborate organizer.
CDC recommends washing hands before preparing food or eating and after using the toilet. Hand sanitizer with at least 60% alcohol is a fallback when soap and water are unavailable. It does not work as well on visibly dirty or greasy hands. After a roadside repair, those black fingerprints need washing rather than another squirt of gel. CDC explains when to use soap or sanitizer.
Allow water for this when planning food and refills. Spending the last clean water on coffee leaves an awkward choice at breakfast.
The toilet kit gets its own bag
A developed campground can keep this simple. Carry toilet paper in a waterproof bag, hand-cleaning supplies, and a bag for hygiene waste. An empty dispenser should be an inconvenience you already packed for.
For dispersed camping, find out whether the destination permits burial or requires human waste to leave with you. Where catholes are appropriate and allowed, Leave No Trace's general guidance is 6 to 8 inches deep and at least 200 feet from water, camp, and trails. Hard or shallow ground can make a trowel useless. Pack-out rules require a suitable waste system instead. Leave No Trace's disposal guidance covers both methods.
Keep the toilet kit reachable during the ride as well as at camp. Store used bags apart from food and clean clothing, with containment that will survive the remaining ride to an accepted disposal point. Read the waste-system instructions before leaving home, including disposal instructions. A sealed used bag still occupies luggage space.
Carry enough menstrual supplies for the trip and a delay, with spare bags for used products. If you normally use a reusable product, think through washing it with the facilities available. A remote campsite is a poor place to discover that your usual routine depends on a private sink. Pack out wipes and hygiene products. The National Park Service includes them in its pack-out guidance.
A towel needs somewhere to dry
Choose a towel by trying it after a shower, then seeing whether it dries before you need to pack. The smallest option may leave you annoyed every morning. A large plush towel brings the opposite problem, a bulky wet bundle that has to share luggage with everything else.
Give damp cloths a separate pouch during the ride, then open it when you stop for the night. Do not strap loose laundry where it could reach a wheel or hot exhaust. For a short trip, a washcloth and a small towel may be enough; a week of campground showers may justify more.
Away from facilities, carry washing water away from the source. Even biodegradable soap does not belong in a lake or stream. Use the site's wastewater arrangements and keep soap use modest. Leave No Trace explains why the biodegradable label does not permit washing in natural water. The wider waste plan should cover that wash water as well as the solid trash.
Keep labels on the things that need them
A tiny unlabeled bottle is a bad home for something with application or storage instructions. Keep those instructions with sunscreen and repellent. Choose quantities that let you use each product as directed rather than rationing a sample bottle across a long trip.
Medication needs more thought than the spare soap. Keep it in its original container, follow its storage requirements, and ask the pharmacist how to handle the temperatures expected on the trip. Heat and moisture can damage medicines. MedlinePlus gives storage and travel guidance. A waterproof pouch only addresses water; it does not keep a pannier cool.
Make the ordinary toiletries easy to remove at bedtime. Food-storage rules can include these items, as Yosemite's rules explicitly do. If medicine needs immediate access or special storage, resolve that with the pharmacist and destination staff before the trip. Then check the small places before bed, especially the toothpaste beside the tent door and the snack wrapper in your jacket.