Use SVGs instead of icon fonts for the reasons explained in the articles.

Current icon ideas (but not satisfying):

• padlock
• detective (chrome incognito is a simplified detective icon)
• zorro mask
• shield

New ideas:

• a blurred user icon
• Venetian blind icon: an easy toggle to close and open the Venetian
• the picket fence icon: prevent folks from looking in or hopping over.

Nice

It collects indeed a lot of icons

1. Clarity
2. Readability
3. Alignment
4. Brevity
5. Consistency
6. Personality
7. Ease of Use (organize, well-documented, tested)

A simple, consistent open-source icon set designed to be used in a wide variety of digital products.

Pick a pack and scroll to search an icon

a curated list of high-quality design resources including icons, illustrations, UI/UX kits, graphics, templates and more

Also available as font, svg or react component.
Sizes are 16, 24 and 32 px with a stroke of 1, 1.5 or 2.

Use icons, but animated :)