Even if you haven't heard before: I'm a fan of Hard Rock Cafe.
Some people claim that I am a bit obsessive about it, but that is a different story.
I am collecting goods from all the HRCs that I go -- t-shirts, pins, drum sticks (yes!), bracelets, etc. However, it is not possible (at least nowadays) to visit all HRCs...
...so, if you are coming to Prague for pgconf.eu, and if you live at a place close to your local HRC, I will ask you a pin, shot glasses, two t-shirts (one for my son, one for myself), and some other minor stuff. I don't have unlimited budget, so it will be perfect if you ping me before you go to HRC -- I can give you the details and the budget left.
Thanks! See you in Prague!