1. Empty Bottle Micro Tank
Super easy and easy to follow instructions at College Life DIY.
2. Converted Xbox 360
Detailed instructions, and a video, are available at Blue World Aquariums.
3. Gumball Micro Aquarium
Learn how to make this mid-skill level tank at Instructables.
4. Non-Functioning Blender Betta Fish Tank
Read all about how to convert the kitchen appliance at Instructables.
5. Heated LED Coffee Hot Tropical Fish Tank
Step-by-step instructions at Robots and Computers.
6. Upcycled Retro Television Aquarium
Apartment Therapy has detailed instructions on how to create this vintage fish home.
8. Recycled Old CRT Monitor Fish Tank
Instructables explains each step, including how to safely remove the PC guts.