This challenge requires the player to first activate the glowing Cubig Feeder by pressing the 'F' key at the right moment six times (it is advised to hit the key slightly before the slider reaches the correct input area due to latency).  The goal is to touch 25 Cubigs in 1 minutes and 39 seconds. Once the Cubig Feeder is activated, a large bouncing Bigpig will spawn on the ground.  Touching the Bigpig will launch the player up into the air above, where there is are many floating, spinning Cubigs.  Touching each of these will cause the player to launch further into the air.  There are four tiers of Cubigs, with a Golden Cubig at the top.   Touching each floating Cubig will reward 1 point towards the Challenge completion, while the Golden Cubig at the top will reward 3 points.  The challenge is very straightforward, but can be challenging if located on a plot with trees or other objects above which cause camera clipping.

You can get this FABkit from the Galeras rep vendor in Skywatch called Provisions Officer Windfree for just 3 silver and 69 copper. It will, however be soulbound to you once you buy it. 

Cubpig Feeder FABkit Size: 1x1 Requires: 17+ Source: Vendor Special: When Cubigs Fly