I've started a weekly vocab test to try & build up my class's vocabulary. I made a set of lists of about 10 words & I give them one to learn each week. They also choose a vocab topic from the list I gave them & go online to revize key words. They keep a record of the topic & the words they found out, what they did to learn the vocab & why this worked well/didn't work. It seems to be helping! I'll have forgotten something obvious in the lists, but feel free to add to them.