Someone once said that we can remember up to 7 words if they are being read from a list and that any more than this number our brain will have problems. I've never tried to prove or doubt this theory but as an activity I sometimes list 7 (previously chosen) words or chunks of language in class while students listen and memorise them.
When I have finished, the students, with throbbing gray matter, try and write them down and if they are particularly special they put them in the correct order. I would repeat again if needed but they must not write while I do so. Once they have written them down they could do something creative with them if they are nouns, write sentences in the future or past if they are verbs.