My sister says she placed this one and knows where it is, so here you go. I like the photograph, in any case!
Typing the spoiler tags would have required less typing, actually. And that isn't a duck, it's a dopper (https://nl.m.wikipedia.org/wiki/Dopper_(waterfles)).
Sorry. I wanted to kick you trice by finding where is actually is, but am not "qualified" enough for that, sadly.
I've found the circle, and have asked my sister if you found the ducky. Meanwhile, other people may also make guesses (and you can also post another one if you want), but if this is it, you have of course won!
Hahahahaha, "she is sure of her business"... (Dutch expression) But yay, I found it! I also put in a direct link to my picture, as it often didn't want to load... Using the direct link works fine, though. I tried uploading it to imgur multiple times, but all failed... it's for some reason a 11.35 MB file, no clue how that happened...
I'll probably create a new picture anyway instead of using yours, as you don't see the circle right away.
This one isn't too pretty compared to most of the recent ones, but I figured I'd keep it anyway. I should post some more, I keep not feeling like it. I'm sorry to those that are on vacation and can't manage to do this on phone and/or slow wifi!
I thought I found it quite quickly... thwn went to circle it, but lost it.... >.< after a while of searching again, I think I found it again, but I'm now not 100% sure...
To be honest, I fell for it too until I actually looked at the picture again while your answers were loading in... (I have slow internet in England, but I could look at the picture on my iPad, which we took it with) but that's my Dopper bottle. Well, for this one, when I found it I was 100% sure, and that's not it. Thanks for both of your attempts!