🔳🔲❕

#black white notification #basic alert #minimalist notification #black square white square alert #simple signal

☯️📨

#black white notification #contrast notification #balance message #yinyang alert #incoming dichotomy

⚫️⚪️💬

#black white notification #black white message #monochrome chat #simple alert #dot notification

⬛️⬜️🔔

#black white notification #monochrome alert #simple notification #black and white bell #visual style notification