Favorite ideas of my own for wishing it was real because it seems so close: stabilised skates

Favorite ideas of my own for fun: Tarzan's Yoyo, snack launcher

Favorite ideas of my own for cleverness: encrypted compressed air, centrifugal vacuum balloon

Ideas I commented on: http://www.halfbakery.com/view/ftb=r94608000,21060:s=Q:d=Qiw:dh=1:dn=10:ds=3:n=:i=ideas_20I_20commented_20on:t=cjm_20comment

View start page: http://www.halfbakery.com/view/

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[Nov 15 2004, last modified Sep 30 2016]

air-bottomed boat (+2)
Cable Post (+5, -1)
Centrifugal vacuum balloon (+11, -4)
Closable giant chimney vacuum cleaner to space (+1)
Double-handled taps (+5, -2)
Driver's Bluetooth Sender (+1)
Encrypted Compressed Air (+4)
Fluid Flywheel Motor (+5)
Gravity Communicator (+10, -3)
Heat-pumped storage of thermal energy (+3, -3)
Laser cooling 3D printer (+5)
Maximally efficient heat engine (+1)
Modular Extra Arms (+6)
Newton's cradle-gun (+3, -1)
Newton's cradle sacrificial helmet (+2)
Osmotic pressure heat engine (0)
Phone back pocket (0)
Retroreflective 3d display (+1, -1)
Scooter skates (+3)
Snack launcher (+9, -3)
Springy variable displacement piston pump (+1)
Stabilised skates (+3)
Steam Jet Thrust Hybrid (+2, -3)
Tarzan's Yoyo (+11)
Underwater Osmosis Fountain (+2)
Unicycle with gimballed gyroscopes (+4)
Variable-opacity headphones (+2, -1)
Who needs a runway? Every airplane wing can be a helicopter blade (+4)

random, halfbakery