diy

https://www.instructables.com

https://www.ifixit.com

https://hackaday.com

https://www.thingiverse.com

https://makezine.com   cool

https://www.wikihow.com/Main-Page

https://www.adafruit.com

https://www.sparkfun.com

https://www.doityourself.com

https://www.ehow.com   food

https://www.mcmaster.com

https://www.sparkfun.com

https://www.ponoko.com

https://fritzing.org

https://www.tindie.com