Here are 48 plenaries I have tried to design the cards for pupils to use in order to promote student leadership in lessons. I also use them myself to promote variety in my lessons.
I cut them out and laminated them in order to produce a deck of cards pupils pick out 4 cards and deliver one of those 4 activities.
Although I have adapted these tasks for technology, many of them are generic and can be used in your own way across all subjects.
I hope you find these useful. (Apologies for the apostrophe error I will correct this if I get time)
Would be great to see how you use it, follow me on twitter: @razfromcav