This is in answer to Task 1.
A game which I use a lot to practice any grammar point is 'Back to the Board'. The teacher writes a sentence (of the grammar point you are studying that day) on the board while 2 students are sitting with their backs to the board. The rest of the class is divided into 2 teams and has to explain the sentence to their teammate who is sitting with their back to the board. This practices thoroughly the grammar point covered in class and is fun too.
I also use the old mime game of Charades to practice Present Continuous, which students always enjoy.