TINKERING?? Well, that's a great tradition with Arduino... here's what Massimo Banzi, the co-founder of Arduino says about "TINKERING" in his book "Getting Started with Arduino"
"We believe that it is essential to play with technology, exploring different
possibilities directly on hardware and software — sometimes without a
very defined goal.
Reusing existing technology is one of the best ways of tinkering. Getting cheap toys or old discarded equipment and hacking them to make them do something new is one of the best ways to get to great results."