These are parts of speech posters that I made a few years ago along with two activities that use the posters. I've found the activities to be fun and effective. There is a "title" poster as well as a poster for each part of speech -- noun, verb, adjective, adverb, preposition, conjunction, interjection, pronoun, and article. The design of the posters is simple but attractive and perhaps more appropriate for middle school and above.
When I designed the posters, I wanted to make them teacher friendly and allow for some activities regarding parts of speech where the students could reference the posters themselves. Each includes a number of example words, and most include words that represent subcategories of a particular part of speech (not just verbs but action, thinking, modal, and auxiliary verbs, not just nouns but singular, plural, irregular plural, abstract, and proper nouns, etc.).
The posters are print ready and the activity worksheets should only need limited adaptation before printing!