The Bubble Machine
I took a bunch of Bubble Wands and glued them into a circle.
The large black electrical thing is the remnants of a 12v Travel hairdryer, with the heating elements removed. That should blow hard enough.
The small brass thing is a slow geared motor to turn the bubble wands.
The Hairdryer is bonded to the main unit with Fibreglass.
The Main unit is actually a Waste Drain Pipe sealed.
Fitting the wands to the unit.
All Wired and finished.
Now fitted in the Rockets section.
Unfortunately the pictures of me building the rocket section got deleted. But this is the finished item.