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From Pathfinder Battlecry!, which isn't enabled.

Backpack Balloon

VEHICLE 6
Price 750 gp
Space 5 feet long, 5 feet wide, 5 feet high
Crew 1 pilot
Piloting Check Athletics (DC 24) or Piloting Lore (DC 22)

AC 18; Fort +13
Hardness 5, HP 80 (BT 40)

Speed fly 20 feet (alchemical, clockwork, wind)
Collision 3d10 (DC 22)
Deploy Balloons (manipulate)

The pilot engages a lever that activates the clockwork components to launch two large tethered balloons and fill them with lighter-than-air gas. On the outside of the backpack is a small clockwork propeller. This allows the wearer to wind up and pilot the vehicle.

This transformation lasts until the pilot disengages the balloons by using this activity again.

Stowable

By spending 10 minutes repacking, the backpack balloons can be stowed after the pilot has disengaged them.

Wind-Up

10 minutes of wind-up, 30 minutes of operational time, DC 22, standby


For a clockwork to act, it must be wound with a unique key by another creature. This takes 1 minute. Once wound, it remains operational for the listed amount of time, usually 24 hours, after which time it becomes unaware of its surroundings and can't act until it's wound again. Some clockworks' abilities require them to spend some of their remaining operational time. They can't spend more than they have and shut down immediately once they have 0 time remaining. If it's unclear when a clockwork was last wound, most clockwork keepers wind all their clockworks at a set time, typically 8 a.m.

A clockwork that lists standby in its wind-up entry can enter standby mode as a 3-action activity. Its operational time doesn't decrease in standby, but it can sense its surroundings (with a -2 penalty to Perception). It can't act, with one exception: when it perceives a creature, it can exit standby as a reaction (rolling initiative if appropriate).

A creature can attempt to Disable a Device to wind a clockwork down (with a DC listed in the wind-up entry). For each success, the clockwork loses 1 hour of operational time. This can be done even if the clockwork is in standby mode.

Description What appears to be a simple, if bulky, backpack conceals clockwork devices that can inflate two large balloons, carrying the backpack's wearer through the air for brief periods of time. In addition, propellers allow the pilot to move while airborne.
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