Black small square symbol ▪

Windows

Tap Copy above, then press Ctrl+V where you want ▪.

Windows has no built-in shortcut for it. In Microsoft Word, type 25AA and then press Alt+X.

Mac

Press Control+Command+Space, search for “black small square” and double-click ▪.

That shortcut opens the Character Viewer, which has every Unicode symbol.

iPhone

Tap Copy above, then touch and hold where you want ▪ and tap Paste.

To type it from the keyboard, open Settings › General › Keyboard › Text Replacement, tap +, paste ▪ as the Phrase and add a Shortcut.

Android

Tap Copy above, then touch and hold where you want ▪ and tap Paste.

To type it from the keyboard in Gboard, open Gboard settings › Dictionary › Personal dictionary, tap +, paste ▪ and add a shortcut.

Linux

Press Ctrl+Shift+U, type 25aa, then press Space or Enter. This works in most GTK and IBus apps.

Word and Google Docs

Word: type 25AA, then press Alt+X.

Google Docs: open Insert › Special characters and search for “black small square”.