The local markets here, like in most other temple towns of India, sell photos of the deity idol in frames of various sizes, statues and other items considered sacred & symolic of the deity.
Many Tirupati related articles/souvenirs can also be purchased and a shopkeeper shall be only too happy to assist you with that.
The SAPTHAGIRI magazine was started as a TTD bulletin in 1949. Currently, it is circulated all over the country as an illustrated, religious magazine It is a monthly edition and available in five languages - Telugu, Tamil, Kannada, Hindi and English.
After seeking the darshan of Lord Venkateshwara, you get free meal coupons at the SriVari temple. The simple meal consists of rice, sambhar heavily dal/lentil veg soup, chutney, rasam light soup, and vegetable curry.