This teapot and where can I buy it

I have a definitive answer. I found a manual to the combination microwave oven, which is a Samsung C108STBC or similar.

The accessories to this oven (which can grill and/or microwave) include:

• a roasting spit (also referred to as "roasting stand") which is the larger spike.

  The roasting spit is a convenient way of barbecuing a chicken, as the meat does not have to be turned over. It can be used for grill combination cooking.

• the skewers that fit into a plastic "coupler" that I found in another cupboard drawer (it looks a little like a cotton reel and I would have never picked it as something to be put in an oven). Together, the skewers are mounted vertically in a circle to form a "multi-spit".

  Using the multi-spit with 6 kebab skewers you can easily barbecue meat, poultry, fish, vegetables (like onions, peppers or courgettes) and fruit which have been cut into pieces.

That's a hand blender, or immersion blender. They're common, Amazon has a bunch of them.

Here's one with interchangeable blades.