Swiss Army Knife w/USB port
Okay, we don't have flying cars or semi-talking dogs or jet packs. But we can carry around a Gigabyte of memory with our can opener
(Click on SWISSMEMORY® to open window with specs). Maybe it really is the 21st century. In a nod to the post 9/11 world (which caused one of the two makers of Swiss Army Knives to go under and be bought out by the other), you can get a Swiss Army Knife without the knife for air travel.
I love living in the future, even if it does contain Nehemiah Scudder.