You can increase revenues through catalogs, now easy and inexpensive to design and produce, a potentially big profit-center. Guerrillas print formal invitations to customers to private sales, parties and special events. They always play favorites. People are on the lookout for gift ideas and a gift certificate might be perfect. Mention them on signs, in brochures.
Coupons are very versatile.
Let anniversary cards celebrate the anniversaries of customers being customers, also for holiday cards and birthday cards. Because so many towns have community bulletin boards, guerrillas are sure to post their signs on those boards. Guerrillas know that computers can transform some signs into posters. Guerrillas produce POP materials that tie in with their other marketing. Their computers do the hard work.