English text has the occasional diacritics.

• Loan words, like née, café, entrée
• Names, like Noël and Chloë
• Place names, like Montréal and Québec

Emoji are quite popular with social media these days.

• ☃: U+2603 — SNOWMAN
• 😀: U+01F600 — GRINNING FACE
• 🐪: U+01F42A — DROMEDARY CAMEL

Note that most emoji are outside the Basic Multilingual Plane. A lot of newer additions consist of more than one code point:

• 🇯🇵: A flag is defined as a pair of "regional symbol indicator letters"
• 🙋🏿: This is an emoji plus a skin tone modifier: 🙋 + 🏿
• 😀︎ or 😀️: Windows 10 allows you to specify if an emoji is colored or black/white by appending a variation selector (U+FE0E or U+FE0F)

Almost all written text has punctuation marks which are outside the ASCII character set:

• dashes: the en dash –, and the em dash —
• Quotation marks: “quotes” rather than "quotes"
• The ellipsis…

There are a few common symbols in use:

• copyright sign ©, and trademark signs ® ™
• fractions like ¼
• superscripts. For instance, a shorthand for square meters is m².