Grav Lift (D20 Modern Equipment)
From D&D Wiki
When this is activated (a standard action), it creates a gravity lift in the 5ft square in front of the user. When an object, creature or character lands on or moves into the space occupied by the grav lift, it is launched into the air both horizontally and vertically for 1d6+Dex Modifier x5ft. It takes falling damage as if it fell 1d3x5ft. The gravity lift deactivates 2d4+1 rounds after activation, and cannot be reused.
A Grav Lift has a purchase DC of 35, with a restriction of Mil (+3), and weighs 5lbs.