what options are there for 3G internet that I can plug in my laptop?

cheap/reliability are both important

Bump

FIRST CHOICE: Does your cell phone have TETHERING and / or " Use as a portable HOT SPOT" ( mine does )......Use your WiFi on laptop.

SECOND CHOICE: See if your CELL PHONE will act as a modem, ( mine does ) then use your cell phone, equipment cost might only be a cable - if that.

THIRD CHOICE; if BOTH your Cell phone and Laptop have BLUETOOTH, you MIGHT be able to connect this way - Bluetooth dongle for laptop at discount stores 30฿ to 300฿