Traffic noise... people on bikes, cars, buses continuously honking like illiterates, this cause headaches and I cannot focus on anything properly. Sometimes I wish I could do Kamehameha on both sides
Headphones of all shapes and sizes can help.
c'mon, you cannot wear headphones all day long
Yes, and it's dangerous to wear headphones while biking because it distracts bikers from the road.
If you're in your own place, try putting on some white noise.
You can even create your own on the command line, if you run mac or Linux.
Leaf blowers!
I would like to have an API for all the legacy software.