Reddit mentions of Kensington K33117 International All-in-One Travel Plug Adapter

In terms of budgeting, Asia is very budget friendly, as you know. Having friends who are local are a huge help, as they will steer you away from tourist traps.

In Europe, definitely do trains and Ryanair. If you are traveling within a country (e.g. Germany or Italy), you don't have to buy your train tickets ahead, just buy regional/local train tickets at the station. You don't get a reserved seat, but they are tons cheaper. Rick Steves helped me a lot in EU.

Some bullet tips:

• Take advantage of "Student" or "Youth" fares as you guys qualify for both. Your High School ID is valid everywhere, basically.
  
• Stay in hostels or split Airbnb rooms.
  
• Stay towards Eastern Europe if you want to save more money.
  
• Get a bank account that has no foreign ATM fees (e.g. Charles Schwab).
  
• Make sure your credit cards are chipped and you always carry some cash (our domestic credit cards are not super international friendly in some countries).
  
• Try using Wwoof or HelpX for free lodging and local experiences (you have to work in exchange though, and be careful about vetting your hosts beforehand).
  
  • If you do use Wwoof or HelpX (especially HelpX) and you are American: If you are asked at customs/borders why you are visiting, DO NOT say it's for work or anything related to that. You are visiting for recreation/the sake of travel. In the UK I had American friends who said they would be working (HelpX is technically "work exchange) and customs denied them entry.
    
• Buy an international power adaptor (eg this).
  
  • Get this too, it's amazing and so useful.
    
    Have to get back to work, but mostly, over prepare mentally and financially. Things will go wrong, you will probably have an instance where you'll have to drop a lot of money to fix an issue, but I promise it will all work out. Always be clearly kind and polite to EVERYONE. Shyness doesn't help when you're on a shoestring.

What's even more impressive is that they were completely rebuilt after they were bombed to the ground after WWI, the botom of the belfry still consists of the original stones from the medieval times. Great, you won't regret it. I live here myself, I go to The Last Post at least a few times a year and it gives me chills everytime.
About the bikes, you sure can, i found this on the city site. There are also several shops in the city centre who offer bikes for rent.

I'm not sure about those power outlets but I think most of the mainland of Europe uses this one. This is a cheap all-in-one adapter might be useful if you travel a lot.

Most chargers these days will accept a wide range of voltage inputs. I just looked at the OEM charger for my 5X, and it's good pretty much anywhere in the world (UK included).
The only trick is getting an adapter for the wall socket. I have one of these. That'll cover most places you'll ever want to go.

Laptop chargers are more or less universal with respect to input voltage and frequency as well. Same thing applies: double check the label first, then find the right adapter.

In fact, many electronics include these universal supplies. I have a TV from the UK here in the US. I just have to use a cheap adapter to plug it into the wall.

An outlet adapter for various countries. Something like this.

In Chile we have 220v outlets, while ya'll have 110v outlets. Before using this adapters you have to make sure that your device says 110~240.

This'll do: http://www.amazon.com/Universal-Adapter-Converter-American-European/dp/B0078QEY9M/

Something fancier (i have this exact same one): http://www.amazon.com/Insten-Universal-Travel-Charger-Adapter/dp/B000YN01X4/

State-of-the-art travel adapter: http://www.amazon.com/Kensington-33117-International-Travel-Adapter/dp/B0002H4YUI/

If you need 220v to 110v conversion you gonna need this baby:
http://www.amazon.com/Simran-200-Converter-International-Countries/dp/B000W9DJ1Q

I hope it helps. Cheers.

edit: Is your screen name an Opeth reference?

Its easiest to buy one of these: https://www.amazon.com/Kensington-K33117-International-Travel-Adapter/dp/B0002H4YUI

It has all the combinations of in/out you'll need all over the world.

Reminder that this won't work for hair dryers or hair straighteners.

I've had a lot of success with this adapter (bonus it's an all-in-one for many types), and it has a fuse, but it does not provide third prong grounding (which is fine with me since I just use it for my laptop and phone two prong chargers.)

This thing is awesome because its all in one and is very compact:
http://www.amazon.com/Kensington-33117-International-Travel-Adapter/dp/B0002H4YUI/ref=sr_1_3?s=electronics&ie=UTF8&qid=1323550981&sr=1-3