The large penguins held up by Rick Moen (early on) and Eric Raymond (later) were mine, and I still have them. I also still have the letter that Microsoft handed out to everyone. Text is still at http://www.loyalty.org/~schoen/dear-valued-customer.html
It was a very fun time... though I wish people had actually gotten their refunds. It's still not routinely possible to get computers without a preinstalled operating system from most manufacturers in the U.S., even decades later.