What to pack for a 15 day European bus tour?

* Clothing:

- 7-10 pairs of underwear (including both regular and sports bras)

- 7-10 pairs of socks (including both regular and hiking socks)

- 5-7 pairs of comfortable, lightweight pants (such as jeans, khakis, or chinos)

- 3-4 pairs of shorts (for warm weather)

- 1-2 pairs of comfortable, casual dresses or skirts (for women)

- 2-3 nice outfits for dinners or nights out

- 1 warm sweater or jacket (for cool evenings)

- 1 raincoat or umbrella (for wet weather)

- 1 pair of comfortable walking shoes

- 1 pair of sandals or other comfortable shoes for sightseeing

- 1 pair of dress shoes or boots (for dinners or nights out)

* Toiletries and Personal Items:

- Toothbrush and toothpaste

- Shampoo and conditioner

- Soap or body wash

- Deodorant

- Sunscreen

- Insect repellent

- Makeup and other cosmetics (if desired)

- Hairbrush and comb

- Hair ties or clips

- Shaving cream and razor (for men)

- Feminine hygiene products (for women)

- Small first-aid kit (including bandages, pain relievers, and antihistamines)

- Travel-sized laundry detergent (optional)

* Electronics:

- Phone and charger

- Camera and charger

- Laptop or tablet (optional)

- Headphones

- Portable charger (optional)

* Documents:

- Passport

- Visa (if required)

- Travel insurance policy

- Itinerary

- Hotel confirmations

* Other:

- Small amount of cash (in euros)

- Credit card

- Travel wallet or money belt

- Small backpack or daypack

- Water bottle

- Travel guide

- Small flashlight

- Sewing kit

- Snacks

- Travel towel