I wanted a set of speakers to play music from my phone that were interesting and unique.
I chose the Deluxe Stereo Amplifier Kit from Kitronik for the speakers and electronics as it had everything I needed. They've designed it to be really easy to wire everything together and include a great set of step-by-step instructions on how to do it.
All I needed was a soldering iron and completing the kit took less than an hour.
I used Solidworks to make my design. As the speakers came with fairly long wires that connected to the main board I decided to make a box for the board and the battery and separate housings for the speakers so that I had more freedom to move them around and place them where I wanted.
I made the main box in two parts that clip together so that I wouldn't need screws or anything extra to secure it - and so that I could print it out without needing any support material.
The speaker housings have an inside part to fit the speaker into with a screw thread on the outside, the outside can then screw onto the top to keep the speaker in place.
I decided to add a hook under the base so that I could sit the speakers down somewhere but have the option to hang them on the wall if I want to aswell.
This one was made in PLA using an ultimaker 2.
After plugging in the speakers to give them a test I was really happy with the sound quality, the Kitronic kit cost me £8.00, working out the cost for the weight in PLA came to £4.85 - so all said, by using 3D printing I've ended up with a unique set of speakers of good quality for less than £13 ($20).