Jet Pack (4e Future Equipment)
From D&D Wiki
Level 4 Average Neck Slot Equipment
Cost: 175 credits
Weight: 12 lb
Benefit: As a move action you may move vertically upwards 20 feet. You may jump down from (but not fall from) a height of 20 feet or less, land standing, and take no falling damage.
A backpack with a downward-thrust variable rocket. Whilst not allowing true flight, the wearer can reach otherwise unattainable locations and drop down again safely.