What should I do with my planners??

So I have 3 Passion Planners and I have no idea what to do with them. I have 2 academic planners (august-july) and one yearly (jan-dec for 2018). i dont use one of my academic planners already so that doesnt count i guess. the one academic i use i use as more of a keepsake to write what i did and put in souvineers like tickets and wristbands. the 2018 one i would do the same but i wouldnt be able to split it up. should i use the 2018 for hw and to-do lists??