Shabbat clothing (in Israel, Shabbat clothing is slightly more casual than you may be used to) comfortable dress shoes (not heels)
shoes for daily wear, sneakers / hiking shoes
water shoes for tiyulim
scarf, gloves, warm hat, sunhat for hiking
underwear – two week supply
pajamas, bathrobe, slippers (for cold floors in winter)
two sets of sheets and pillow cases
toiletries, alarm clock
pillow, towels, blankets (or sleeping bag)
supply of prescription meds if neede
Miscellaneous
The following items are not absolutely necessary, but you may wish to bring some, or all of them, as you see fit. All of these items can be bought in Israel but may be more expensive than abroad.
appliances (iron, blow dryer, sandwich maker, etc.) 220 V with adapter plug