Just picked up one of these http://nebotools.com/prod_details.php?id=52&cid=21 at Batteries Plus for $19.95
Don't forget the jumper cables. I've kept things like cables, gas can and some tools at various times, the cables have come in handy on more than a few occasions and they're the only thing I really keep now...darn running lights.
'94 C-Package Black & Tan | MS3x | exhintake | USDM Tein Monoflex 10/8k | My 8 year roadster evolution
Just picked up one of these http://nebotools.com/prod_details.php?id=52&cid=21 at Batteries Plus for $19.95