As someone who did a PGCE Post Secondary teaching FE and HE students I’d say you should...
Make sure you have
A decent laptop which allows you to send emails/virtual chat on skype/zoom and create powerpoints/handouts on (especially graphics and pictures for younger children and students).
All the stationary (folders/things like that)
Post it notes or revision cards and great for writing quick notes on.
Keep a diary or a working journal too: this is so you can track what you do each day and makes writing or remembering dates and logging activities easier!
Good luck and enjoy it!