Time to contribute to this fabulous resource.
I use the following as a simple activity for this chapter. I call it 'the left, right, u-turn game' for apparent reasons.
I pre-write any combinations of the directions above (L, R, U). I also write an arrow underneath the last direction denoting the final direction that the student should face if they have followed the directions properly. I begin simply and slowly so that the whole class can participate in at least a couple of rounds. Thus, firstly I might write LLR (with an arrow under R for the final direction. Secondly and still slowly, I might do RURL. Thirdly and a little quicker, RULLU. This is done until you get quite long chains and are going quickly. All the class get a go. The weaker ones are involved, and it satisfies the more able as they last longer and have to think fast.
I think it's a game that works well.