Rather than posting learning objectives, my school requires us to post our "I Can" statements...essentially a kid friendly version of the standard they are learning. I prefer to put these in 8.5x11 document holder and hang on my walls. I can then use a dry erase marker to write the objective/I Can statement on the glass of the frame, making for a cute but easy way to change the lesson objectives that are posted.
This file is an editable Power Point, so you can change the subjects and language to fit the needs of your class/school, as well as choose the borders/monsters you like.
The Karate Monster images came from my Class Dojo Karate Belt Avatar set. With that, you could also use avatars that are not included in this set.