We've just released Tether It and Tether It Trial. Both apps support WiFi, USB, and Bluetooth tethering with no root required. Tether It Trial is free and supports tethering for up to 15 minutes before having to re-establish the connection. Tether It is a paid app and contains no restrictions.
Tether It
https://play.google.com/store/apps/details?id=com.snrblabs.donkey
Tether It Trial
https://play.google.com/store/apps/details?id=com.snrblabs.donkey.common
Tether It
https://play.google.com/store/apps/details?id=com.snrblabs.donkey
Tether It Trial
https://play.google.com/store/apps/details?id=com.snrblabs.donkey.common
