As a note, referral marketing and affiliate marketing are similar in execution, but slightly different in concept. In the case of referral marketing, you’re asking existing customers to reach out to their established networks. Affiliates, on the other hand, operate solely for the financial benefit of sending you sales. One or both may be appropriate for your company.
Tripods range tremendously in price, and the quality of your tripod should depend on the level of camera and lens you have. If you’re shooting with your phone, you can get by with a table mount like the Arkon Tripod Mount or a full-size tripod like the Acuvar 50” Aluminum Tripod. For a DSLR, Manfrotto makes a variety of trustworthy tripods starting with the Manfrotto BeFree and increasing in quality and price from there.