Phonics:
Can you gather some objects from around your house and have a go at saying them in sound talk. Eg: cup = c-u-p
Perhaps you could try writing some of the letters you can hear in the words.
Maths:
Can you go on a number hunt around your house and see what numbers you can find.
Topic:
Look out your window or in your garden and see if you can spot any signs of Winter. Can you have a go at drawing or writing about anything you can see.