The British charity I CAN helps kids with communication difficulties cope and improve their skills. They run adopt-a-word, which allows you to 'adopt' an English-language word (GBP 20 each) of your choice for a year. You get a nice pdf certificate to certify you did so, and the money goes to the charity. I thought this a quite fun idea, so I went and adopted 'legionary'. I'm sure various Ancient Warfare themed words are still available.