Make use of the Raspberry Pi 3’s brand new Bluetooth capabilities to play audio and/or music over a wireless speaker, without using a dongle!
Something similar to this but smaller to hold Vale mods etc.
DIY Temporary Fabric Wallpaper (oh my gosh this is mind blowing!!)
If you're upgrading to a faster, stronger wireless router, don't chuck your older Wi-Fi box. With the magic of DD-WRT, you can turn your older wireless router into a range-expanding Wi-Fi repeater to cover everywhere you need a connection.
Many of us have heard of the Raspberry Pi in the past. It may sound like a food but is anything but. It is a great tool for folks who want to try exciting electronics projects. This infographic from WhoIsHostingThis shows you how to get started with it:
Picture of DIY 2G/3G/4G wireless cell phone signal booster