I had the standard question words posted on my bulletin board but I found that my 2nd graders needed more. I couldn't find what I needed on TPT so I created a set of 18 question word mini posters. I printed these on white card stock, cut them out, and glued to colored card stock just a smidge larger for a colorful border. After laminating, I placed a magnet on the back of each and they hang on my whiteboard where the students can check them out when needed. You could also print them on colored card stock.
The words included are: who, what, where,when, why, how, is, can, do, did, does, could, should, would, will, am, which, and are. If I have left any out that you would like just let me know and I'll update the set.