Miscellaneous: Symi gets really hot in summer months. You should definitelly put some sun block on, wear a hat and drink a lot of water, especially if you walk up the Kali Strata. There are few little grocery shops along the way, so you can buy some water on the place.
Luggage and bags:
As I always say, and rarely manage to achieve, travel light! You may have to carry your luggage around Rhodes, on arrival/departure. On & off the ferry, then probably up a steep path/steps to your accom. on Symi.
Clothing/Shoes/Weather Gear: Flat comfy shoes/sandals , the surfaces are all uneven, it's easy to lose your footing when admiring the many views.
Walking boots.. plenty of off the beaten track places to explore, independently or on one of the organised walks.
" jelly type sandals" for paddling/ swimming .many of the beaches are shingle/rocky and there are sea urchins/jelly fish.
fleece/ waterproof/jacket.early season there is a risk of rain, and evenings can be a bit cool.
Dress is usually casual, but smartish! (very few football shirts/ back to front baseball caps etc!!)
Toiletries and Medical Supplies: Well stocked chemist, and helpful, knowledgeable pharmacist in Yialos, near the taxi rank.
Prescription medicine may have to be ordered from Rhodes.
Local shops stock suncreams/mossie stuff etc.
Photo Equipment: Symi is a photographers dream! So bring at least one camera!
Panoramic views, local colour, old ruins etc, so a variety of lens/film etc
.Shop in Yialos sells and develops film. Some limited stock of equipment too. Found on harbourside, near the Symi memorial.
A More extensive range of equipment can probably be found on Rhodes.
Camping/Beach/Outdoor Gear: No designated camping sites on Symi. Risk of fire!
Sun loungers can be hired on some of the beaches, but can be pricey.
An airbed may be useful to lay on, as there aren't any sandy beaches, mainly shingle, so can be a bit uncomfortable to lay on.
Miscellaneous: Binoculars, selection of books (can swap at a few locations). Painting/drawing equipment, if artistically inclined..there are courses on the island. Torch, there can be power cuts.
Photo Equipment: Make sure you have tons of films with you or take a digital camera. The place is so charming and its colours are so beautiful that you just want to take a picture with every step you make.