Something to keep in mind when thinking about what to bring for materials is that a major component of the bilingual project is teaching core curriculum through the target language. So many times you will be working not in an English class but rather in a different subject taught in English. I, for example, have worked in Art, PhysEd, and Conocimiento del Medio which is a combination of Science and Social Studies. (I work at a CEIP.) Some materials that I've found useful and interesting for students are maps, money, and sports equipment (the boys, especially, loved seeing an American football and a hockey puck, a wiffle ball set is also lightweight and can be fun).
Another suggestion for older students (adolescents or adults) are Dear Abby columns. You can find the archive online at dearabby.com. There are tons of topics that can be relevant to teen and adult lives. You can use them for reading comprehension, letter writing practice, conversation with conditionals, etc. Magazine articles can also be good but, of course, are much longer and often more difficult to read because of writing style. Letters, on the other hand, normally use language similar to spoken conversational language and tend to be easier to digest.
Remember, often the most \"every day\" things are those of the most interest to your students. Observe your surroundings and think about what's really normal to you but might not be in another country or even region of the US or Canada.
