Interesting!
Curious to see the pics, please show  
Have fun in Berlin!

Sounds nice! Hope you're having a good time there. =)

The tiny ones are key ring size - but no key ring
The rest are normal mini size and normal size
I got few of the tiny ones and the set of the 5 mini ones
They all have U on them accept for the angel, which is the copy of actual Bud angel - so no U on that one
OOPS,  they also had (as you can see) 3 big size fake buds. Forgot to mention

They look actually really funny! Design are different (most of them), so a great addition to a collection. Where they also cheaper? Seizes are a bit strange at first when you at them on the shelf... But then again, who cares. =)

Great find, Fishbone!
Do they have any text on the bottom?

I only bought the tiny and small - all patterns.
What I do like most about them is that apart from the angel (which is the only one without U on its chest) - they are all completely original.
They do not have any logo / writing what so ever.
The set of 5 mini ones was just under 17 Euros and each of the tiny ones was 1.95 Euros.
Sadly, didn't get any duplicates. Came back with way too many ducks (if you ask my husband) but to be honest, considering I have absolutely no shelf space what so ever...  
 
If anybody happens to be in Berlin, next to the DDR museum, it was one of the souvenirs shops
https://maps.google.co.uk/maps?oe=utf-8&client=firefox-a&ie=UTF-8&q= ddr+museum&fb=1&gl=uk&hq=ddr+museum&hnear=ddr+museum&cid=0,0,3246138480436680804&ei=_yQMUaTQDOW_0QWtv4EY&ved=0CJoBEPwSMAk