I use icons that recall the Win XP era, when home users finally got an NT-based Windows version that made both work and gaming more stable than ever before. The overall design was also inspired from Windows 2003 Server Edition. I worked a lot with it.

• Jousting in video games: Icon of Mount & Blade: Warband.
• Helsinki Biennial: An official XP icon, bu I have no idea what it was used for.
• Data & Encryption: Security icon from XP.
• Intro through traits: Icon of the Sims 2 standalone Sim creator.
• Hospital visit: One of the remote desktop executable's icons in XP.
• Win 3.1 Nostalgia: Win 3.1 progman.exe icon. That was the shell there instead of explorer.exe in later installments.
• Poets of the Fall: Win XP audio CD icon.
• Video games that made me learn: Sims 2 University expansion icon. The post mentions Sims 3, Transport Tycoon and Civilization. The last two being DOS games have no Windows icons. Sims 3 has no learning related icon and Sims 2 icons fit better to the WinXP/2003 design anyway.
• Blaugust: Win XP's Wordpad icon.
• Blogger Takeout Viewer: Windows Live Writer icon.
• Treasure of the Pirate King: Windows XP's Backgammon icon.
• Chimera Squad: Windows XP's gampad settings icon.
• Family History: Of course this icon is not my family crest. It is from the Heroes of Might and Magic 3 released in 1999-2000.
• Random Facts About Me: MSN / Windows Live Messenger icon for Windows Vista.
• Degoogling: Windows XP's recycle bin icon.
• Python-related articles: The Python logo as an icon.
• Archives: This icon is borrowed from WinRar.
• Category icon: This is a folder icon from XP, but I can't remember where it was used.
• This post: This is the icon from IconForge, a free app I used to create and edit icons when I was a kid. A bit ugly but pretty nostalgic for me.
• RSS/ATOM feed icon: https://wmh.github.io/hunbook/tools/fatcow-icons.html