You will need a Type C or Type F power adapter for Iceland.
your need a xbox adapter from game for around £40
universal adapter
Yes!
For Scotland, you will need a Type G plug adapter, which has three rectangular prongs in a triangular pattern.
anykind
This item uses an AC/DC power adapter
You will need a Type G adapter for Scotland to ensure your electronic devices can be used without any issues.
For Australia, you will need a Type I power adapter.
One from rksport.com It's about $30.
You just plug it in and they'll work fine together.
If you are talking about building of wireless network. Then you need a wireless router and a wireless network adapter (if you have a laptop you might not need it). If you have a desktop you rather will have to purchase a wireless network adapter. Pay attention to what kind of wireless network you are going to build. It can be a, b, g, and n types.