Hi Silver,
Thanks for your question, and its great to hear you're thinking ahead!
You've already had some great advice about textbooks and jotters - I invested in a good laptop at about £550 at the start of my course and that was all I personally needed for notes, but I also carried around a small A5 notebook to write down any meetings/lectures etc for about four pounds.
Have you also considered what you may need to spend on your groceries each week? Whether you're living at home or in halls its usually quite a fun bit of practice and independence to manage a food budget and learn to cook for yourself on a budget for the week. I used to spend about £15-20 per week on essential groceries and always made use of the reduced items aisles! Have you considered working part-time as a student ambassador whilst at uni? This can be a fun way to get some experience, meet people and top up your earnings.
Hoping this helps a bit and wishing you the best of luck!
Holly
University of Bath