Someone recorded the sound of a syringe sucking in air. Someone else recorded an electric saw cutting bricks. Someone recorded their dog Telma eating kibble.
All three are on Freesound right now, uploaded today, free to download and use for anything.
Freesound is a collaborative library of 723,600 sounds — and counting. Built by a community of recordists, musicians, sound designers, filmmakers, game developers, and curious people who had a microphone and something interesting to point it at. Every sound is licensed Creative Commons, which means you can download and use them freely.
Search anything. Rain on a tin roof. A 1967 Chevrolet engine turning over. Children laughing in a park in Portugal. An empty cathedral in Spain. A thunderstorm recorded in rural Japan. The specific sound of a wooden door creaking in a specific way. Someone has recorded it and uploaded it.
There's a Random Sound of the Day on the homepage — you hear it first, then guess what it is before revealing the answer. That feature alone will cost you twenty minutes.
The map feature shows you where every sound was recorded geographically. Click any point on earth and hear what it sounds like there.
Nonprofit, community-run, free. One of the genuinely great corners of the internet that most people have never heard of.
Go search something. Start with your hometown.