Café / lunch spot
Stamp card with 8-10 stamps for a free coffee/lunch. High frequency, low price point. Skip points — too slow for daily visits.
Fashion store
Points (1 dollar = 1 point) with three tiers. Variable basket size makes stamps unfair — customers feel a t-shirt and a coat shouldn't earn the same.
Salon / beauty
Stamp card, but a higher threshold — typically 5-6 visits for a free treatment. Birthday coupons are non-negotiable.
Restaurant
Lower frequency than cafés but higher basket. Use points + tiers, and lean heavily on win-back after 30 days inactive.