As J170 has said, you'll need a wizz wheel (E6B is good to start with), relevant charts (VNC,VTC,WAC, ERC-Low) scale rule, protractor (or a combined version), eraser, sharpener and several pencils because your guaranteed to lose 1 or 2 in flight...better yet, attach one to your flight plan folder on a string. Personally I dont bother with a kneeboard or anything like that, a simple A4 clipboard does the trick but its up to you. Oh, and you'll definitely want to invest in your own ERSA at some stage :)