Congrats hands.
A list that comes to my mind is as follows
Landing papers and Visa
Birth certificate or adoption papers
Form B4
Proof of Funds
Family records (such as, marriage certificate or divorce papers)
Medical records (such as immunization records)
Dental records
Official school records for children
Diplomas, degrees and transcripts
Academic credentials evaluation report (if you had your education assessed before coming to Canada)
Reference letters from previous and current employers
Professional or trade licences or qualification certificates
Up-to-date résumé or summary of work experience
Valid driver's licence or other identification documents
Vehicle registration documents (if you are importing a vehicle into Canada)
To be better prepared for the Landing ,it is good idea to attend CIIP session other wise look for the following link
http://www.settlement.org/sys/faqs_detail.asp?k=LAND_LAND&faq_id=4000602