This requires a bit of preparation, but after you’ve made it once it can be re-used.
Make a load of cards and cut them up. In pairs, the kids have to sort them.
There are lots of options here:
Cards to be put into an order (e.g. a list of mathematical expressions to be put in order of their value)
Cards to be put into groups (e.g. separate into energy stores and energy transfers)
Pairs of cards to be matched (e.g. key term and definitions, or two sides of an equation)