Can anyone give ideas of what are the best/most realistic employment ideas for self employment with an S.O please? (I have an S.O for images)

I am thinking of going for a leaflet distribution job I heard someone else had luck with.

I  wondered is it a bad idea to go for cleaning dog mess from people's gardens? Just thinking of service based jobs where there is always a need.
I'm not the sharpest tool in the shed, so always worry about whether my ideas are sensible or not- Background checks/risk etc.

So to recap-

1. Dog poo cleaning idea good?
2. Any other sled employment ideas?

Thanks