My Linux mug is starting to crack.
It's not really a Linux mug, but Joe Barr gave me this present some years ago (when I was still with LinuxWorld), which was an oversized coffee mug with handpainted penguins and snowflakes on it. It's now starting to show some cracks after many, many times in the microwave.
My wife thinks its a Christmassy thing since it has snowflakes and penguins on it, although I think of it as a Linux thing because of the penguins and snowflakes (it's cool!). Funny how different a meaning it gives to each of us.
Also years ago, I tried convincing an analyst that there was a market for multi-player games. In 1995 that was a hard thing to prove. PC and console based games were far ahead of the text-based MUDs, MOOs, MUSHes, etc. that were around. However, a PC player long used to playing by themselves would either get it (fun with friends), or miss the point entirely ("this is so graphics-primitive!"). No one quite believed that people would actually pay to play on a regular basis.
By 1999 the time finally came for a new generation of graphical multiplayer games and MMORPGs. Another 5 years later it's widespread. In five more years it'll be almost difficult to consider a world without MMORPGs.
I guess I hadn't quite learned the business-language needed to convince folks.