The stray cats of Istanbul and the city folks' love for them are well-known; there are even documentaries on them, like the "Kedi" (2016) movie! This stamp series would feature the famous street cats of Istanbul where one design could show a cat resting on a windowsill in Balat, another napping by the Bosphorus, etc. Istanbul’s street cats are an iconic (and adorable) part of daily life. If you’ve ever spent time feeding or photographing them, this stamp idea is extra personal.