Computery thingy - like my Treo except more l33t and with direct access to google via the wormhole (so I can look stuff up)
A Big F*cking Gun
A medical implant or box or doohikcy that will monitor my health and provide me with antibiotics, stimulants, painkillers, sedatives, or a combination thereof where appropriate (or where interesting from a recreational standpoint)
Sunglasses providing me with a heads up display and protection for my
eyes a very sharp knife (because low tech solutions are often the best)
On the subject of low tech, I'd like to be able to make fire without using any electrical gizmo... i think the ubiquitous Zippo is probably as good as it gets
One of those anti-mugging electrical coats that only come in women's sizes, because nothing says "go away" like 40,000 volts
A kazoo
suntan lotion ... if you think about it you *know* it makes sense
no subject
a very sharp knife (because low tech solutions are often the best)
and now I have obviously run out of ideas