Except don't expect British people to be all that impressed when you serve them a staple of children's birthday parties! Well, I suppose less so now with bought in party food, but certainly any child of the 70s or 80s will know those. And will tell you they're missing the cocktail stick and bit of paper that makes them jelly boats.

"well before the start of the Middle Ages"

All of those battles took place within the middle ages; as with any arbitrary time period there is some debate around the edges, but 500-1500 is a rough guide.

Looks like a teasmaid with the teapot missing to me.

Bless. Americans calling Phil the Greek a moron when the OP is too stupid to know that Elizabeth II is not 'Queen of England'. She's Queen of the United Kingdom (of Great Britain and Northern Ireland, if you want fullness), and about a dozen other titles, but not Queen of England.

Looks like a wheel tapping hammer (to check train wheels are sound) - except the plastic bit on the end would mean it didn't work.

Definitely thumb thingy for holding book open. Have spent many an hour in the queue for the tills in Borders staring at racks of these things.

The head seems too small for a polo mallet. My guess would be a wheel-tapper's hammer (tap the wheels of a train - if it makes a clear sound, it's good, a dull thunk means it's cracked). However, the handle seems a little long for that.