Bought one of his bottles a few years ago. I have it right in front of me as a desk toy, next to a Theo Jansen strandbeest model. Every time I look at it I'm reminded of how delightful the whole experience was of obtaining it. I can only recommend everybody buying one of these.
I too bought one as a gift for a friend and mentioned in the comment form how much I'd enjoyed The Cuckoo's Egg. The reply was effusive, and the overall "purchase experience" still leaves me with a warm glow.