How many bones keep a dog happy?

Clearing out the downstairs sitting-room for the decorators tomorrow. Have been waiting since March and now they are coming!
As I was busily emptying the room, all these bones started migrating from the kitchen into here! The black bone we brought back from London with us last weekend, is v heavy duty. Think it must be produced with big Labs in mind, but it accommodates Dentastixes in both ends. However, one v determined Border seems to be able to extract the 'stix quite easily. Only problem is I cannot see it against the horrible dark carpet we have and have tripped on it a number of times. It is somewhat ubiquitous and appears in the most unexpected of places.
After the photo was taken another bone appeared in this collection.

Is there a collective noun for such objects?



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