Are there any widgets on the market that let me control standard Android tethering? I use it quite a lot and it's a pain to have to navigate through all the Settings options just to check a checkbox...
Have a look at Tethering Widget. Its a free widget with nice look. It can be used to enable/disable WiFi and USB Tethering as well.
To add, press Home button
Menu | Add | Widget | Tethering (full) / Tethering (small)