I actually thought I invented stilts by using this way of thinking, imaging that he ken could balance on a tama like a tama could balance in bird (at that point I thought it was impossible). I don't think it's about inverting tricks, but inverting the 'pauzes'. Kendama is mainly going from one pauze to another with manipulations of the ken/tama in between. With pauzes I mean big cup, small cup, base cup, spike, birds, bats, wingwalkers, clifftops, thumb traps.... and manipulations are things like whirlwinds, earth turns, gunslingers, suicide tricks,... It is probably more detailed than those two categories, but this covers the majority of kendama tricks. Coming up with new things is taking random pauzes and putting different manipulations in between.
Crazy example: Bat --> Ken flip --> Bird --> Gunslinger --> Wingwalker --> Earth turn --> Spike
Now back to the 'inversions'. You can invert the pauzes very easily:
- Big cup --> Big cup lunar
- Small cup --> Small cup lunar
- Middle cup --> Lighthouse
- Spike --> Airplane
- Bird --> Stilts (both small and big)
- Bat --> Hammer (or what are they called?)
And than we get to the hard (or impossible ones)
--> Clifftop --> impossible?
--> Wingwalker --> impossible?
--> Slip grip special --> Depending on the length of the ken, I think it could be done...
The manipulations than are added in the same fashion, UFO's, Jumping stick, typhoons, again suicides...Basically any move that flips (or doesn't) the tama or ken around any of its possibe axes. But the inversion only takes place on the pauzes.
Of course you can add the different grips, and the switching between grips to make even more crazy combo's, which supports the fact that the number of tricks is endless...
These were my thoughts on inverting tricks, my mind dares to wander at some times...
ps: One of the crazy pauzes not mentioned is 'naughty bird', as seen in this video I really want to see someone inverting that one! I'd love to see a naughty bamboo horse
