Small 240V electrical appliances used for unintended cooking purposes...

My favourite bottom is the flat plate


Hahah - that typo is too good to lose!

Try again...
My favourite is the flat bottom plate sandwich toaster. They will cook and warm almost ANYTHING that is not liquid. If the items gives off any liquid, they have a small lip that will catch some... You need to 'plug/juggle' if you find the preset temp is too high though. For meat, they usually are small power units, so the meat will usually cook slowly and be tender!

Place a sheet of 'baking paper' on the bottom plate - and top if you are using the contact heating method. Some utensils have a 'height lock' to keep the top plate above the food, needed if you do pizza or other stuff which will need the top plate to be kept off the food top surface or you get a gooey mess. Some stuff (party pies) will crush from the weight of the top plate, you can use a small metal spacer, if there is no height lock. I have even used a knife to keep the plates separated when I had nothing else.

Pizza - even from frozen
Lasagne slices
Fish fingers
Chips (spread in a single layer - and from frozen will take some time to get browned and crisp)
Pies - full size and party, pasties, sausage rolls
Yum Cha style snack thingies and many such normally deep fried snacky things - you use no oil, so most come up better!
Chops, sausages, ribs, many different bits of meat, etc
Pappadums, prawn crackers - you need no oil mostly!
Corn cobs, many other vegies!

You are limited only by your creativity/imagination - almost ANYTHING you would do on a frypan on a hotplate, plus you get top heating like a small 'mini-oven'.

AND you can still do the toasted sandwiches... ;-)