Other accessories to think about:
– Sunglasses: I usually take one but you may like to take a couple more on a beach holiday.
– Gloves, hats, hand/foot warmers: you’ll appreciate them for the colder trips.
– A waterproof phone pouch for those swimming pool shots.
Avoid taking these with you:
Expensive or sentimental items
Rings and small earrings – they are easy to lose. You may want to wear a wedding band though in some countries even if you are single.