And some more bits to puzzle you...

[playmofire]

no 16 is truly PM, dont know form which set or what it is exactly. Just looks very familiar. i do recognize it from my old plamyo.

You're right, it is Playmobil and, looking more closely is familiar to me, too.  It looks like a tipping mechanism for a small vehicle

[PlayMoto]

....
no 15 looks like a motorcycle kickstand. not the regular one, but from this carry-on case It has a different type of kickstand and is not listed on playmodb. I'll get it to Heather tomorrow with a picture.

I think it's this part:
30-09-4430 kickstand


also used in the 5114, 3062 and 3343 motorcycles. (oh, i see it's also used on 5116 and 5117)

[PlayMoto]

You're right, it is Playmobil and, looking more closely is familiar to me, too.  It looks like a tipping mechanism for a small vehicle

Darn it, look there it is!
right tray, bottom left bin. Isn't that the same piece?!

[playmofire]

Darn it, look there it is!
right tray, bottom left bin. Isn't that the same piece?!

It is - now to find the rest of the item!   

[PlayMoto]

The part
The set 

...and indeed, that is still standing at my moms house ;-)

[playmofire]

Great detective work, Martin.