Hey, that's not fair! (my bike is titanium)

How about a wheel index - you can count single ski as a wheel, so is
pole.

Let's see...

My road bike, my wife's bike, tandem, my son's bike (I bought it, but
no longer
own it though), my skates, wife's skates (all 5 wheel), my rollerski
and poles,
snow ski + poles, my wife's ski + poles, tandem kayak with paddles
(yes, that's a wheel too)-2 paddles, power waking poles -1 pair,
mountain bike.

Hmmm.. that is 50 - still a long way to go.

Let's see.. old skates -8, my computer chair - 5 wheels

still not enough...