Check out these wedding bands by Sakurako Shimizu. They are molded into a waveform representation of your partner's voice recorded saying "I do," or any phrase you choose. A very cool and unorthodox idea!
I was bored and made this. Its a Police Box based ring with a tension set 1CT Princess Cut center stone. The three round stones is the Police Box sign, the two sets of four baguettes symbolize the windows, and a small princess cut below that to symbolize the instructions found on the front of the Police Box.
Wait, wait, wait. You were bored and you made this? I'm not usually one to encourage idleness (in other people), but please run out of ideas again sometime soon!