I've watched a lot of the show, including this series. I continue to be fascinated that people can come up with new ideas, whereas I would just give up and say 'it's all been done before'. It's been interesting to see the products you don't need to product for to do the activity (eg the guess the accent card game, for the most part that yoga board).
I don't really keep track of who's offered what, though I've noticed a lot of competition between dragons at times (I wouldn't be willing to go 50/50 etc). But I love the show for the awful puns that make me laugh, and I try to remember for my dad jokes.