This is very unlikely to be of use to many others, but one never knows!
I have an Aerogarden Harvest hydroponics system. It has two rubber bungs to cap two holes at the rear. I've no idea why they're there, but one of them wasn't.
So I knocked up a quick replacement and printed it in flexible filament.
If this helps someone else who finds themselves unbunged then all to the good!
In the picture you can see the original on the left and the printed version on the right
I am very much an enthusiastic amateur when it comes to designing. My designs tend to have two things in common
1) They serve a purpose. I like to design functional objects which have a real-world use. 3D printing for art is fine, but it's its real-world application which will take the technology forward
2) Wherever possible I design to be easy to print and try to eschew supports or complex printing wherever possible; modifying the design where necessary and possible to achieve this.