Hmmmmmm yeah perhaps some cleaning bots that keep the streets clean ^^ :P Like Wall-E but then they get rid of the carbage xD Instead of piling it up :)

Some plots... Well at first he wouldn't know your char is a magician, so thats already a plot xD
Secondly, perhaps my char can keep it a secret what kind of soldier he is? So that we can create a plot there to.
Perhaps they become great friends, and they have to decide what side they are on. If a all-scale war truelly breaks out.
Keeping cities save from beasts that roam the woods? Also a good thing to do :)
And for the rest... I mostly go with the flow xD For sometimes i create a plot, but then suddenly I gain a greater plot inside my mind ^^