Get some plug adaptors
Depending on which country you are in, the electrical connections may change or have different voltages. There is nothing worse than arriving at the hotel and finding that you have no way to charge your cell phone or computer.
To avoid this problem and having to go out and find a shop where they sell you an adapter, it is advisable to buy and take a universal adapter with you before traveling. These items usually include connections for practically anywhere in the world, so no matter where you go, you can always plug in your electronic devices.