If you are interested in learning, you can send it: PDA, computer, quick translation.

For entertainment, you can send: GBA, NDS or NDSL, PS3 Wii. XBOX360

There are many things in life: wallets and belts.

But I think it's best to get rid of travel. If two people have time and conditions, this memory will be permanent, and there will be photos and videos to recall, which is more memorable than material things.