List some businesses who offer a parallel product or service within your geographic area:
These could be successful businesses or merely influential brands or individuals that you might aspire towards:
Where does your client do the majority of their shopping? What are some of their favorite brands?
This could be from ANY product or service from ANY category: Fashion, television networks, shoes, beverages, luxury brands, electronic brands, automobile brands, ect.
"Peer brands" that provide something complementary to your brand experience. For example, Lululemon could be considered a peer brand to Nike Footwear.