And here are the suggestions I got:

1. Some kind of fibula. Carnivora?

2. Pig fibula with some kind of pathology (breakage?)

3. Digested pig fibula with gnaw marks

4. Heavily chewed hind splint bone of a horse

5. Vestigial metapodial bone of Cervus elaphus or maybe Capreolus capreolus (Can anyone provide any photos of vest.mp. for Capreolus?)

6. Horse hyoid - unfused Thyreohyoideum (Photos anyone?)

7. Ossified rib cartilage

8. A very large pectoral spine of a Silurus fish

As you see, the opinions are very diversified, which makes the identification harder, though more interesting.

Personally, I'm not fully convinced by either of them, but I tend to lean towards either the pathological pig fibula, or the unfused Thyreohyoideum of a horse.

Any further suggestions or opinions regarding these are still very welcome! I look forward to making the identification even more interesting!

And thanks again for all the kind words from everyone!

Wishing you all the best,

Imola