"The Magen David Adom, the Red Star of David, has an American friends arm. This is the Israeli emergency services, like the Red Cross, only because it's not a cross, they wouldn't let them into the ICRC for decades. They're in now.
"Friends of the IDF provides rec tents, care packages, and canteens (Stage Door-type, not metal, water-bearing-type) for the soldiers. This may sound trivial, but if you haven't been in the military, you may have no idea how important this sort of morale-booster is.
"This may sound even more trivial, but you can have pizza delivered to soldiers or units. I have this image of the delivery guy dodging incoming Katushyas, getting to the foxhole, and then collecting a combat-pay enhanced tip for his efforts. Seriously, this stuff matters to kids getting shot at.
"And for those of you who want to buy a tank, whose wish right is that the last thing some Hezbollah cockroach sees is your name spinning at him on the tip of a rifled artillery shell, well, you can't do that. At least not directly. But you can buy Israel Bonds, which help support the state. They're real bonds, with real coupons (except for the zero-coupon bonds), and they've never missed a payment, which probably means there are some United employees wishing they had invested in those instead."(Hat tip to View From A Height)