What all things to be taken before exit from the company?(except docs)

-- Some of your past PRDs (if possible),
-- Get KTs from other peeps regarding their work if it interests you/is relevant for your next role -- If possible, have the last 1:1 with peeps in leadership (whosoever you have worked with).

Be careful about taking work related documents while leaving. Some companies, typically large corporates will have passive monitoring to look for files shared to external domains/emails/uploads etc. either they will warn you or if found out after the fact, they might take actions like FnF cut or some other stuff. Think twice whether it is really something unique you created or something you can recreate again if required. 99% would be like that.