hoverboard

basically, the hoverboard is a skateboard/hovercraft, ala _Back to the
Future N_.  In most respects it'd be equivalent to a skateboard, but
it'd be able to handle some terrain that a normal skateboard couldn't,
and it'd require some PPE/ISP to power.

skateboard

what it sounds like.

rollerblades

what it sounds like

katanas

what they sound like

discs

multiple ways of doing this...  The one I like right now involves this
magical item, a rectangular prism about 1" tall by 1' wide by 2.7'
long.  Basically, it'd look like a long, thin box, with openings at
each end.  From each end, however, can be pulled a `disc'.  Various
ways to think of setting this up, and perhaps not all the ways are
available at first.  Could pull out energy disks (n, where n is a
function of PPE/ISP spent or mastery of the box or whatever).  more
powerfully, Properties of the discs could be determined at creation
time (or right after), so, for example, the user would think `cold'
and draw a disk, and get a disc that acted as a small thrown
cold-based weapon.  Properties could be things like `fire' and `ice'
or `hot' and `cold', and `energy' or `magic' or `psionic' or
`physical', with some kind of n-way (magic, psionic, electric) power
system.