Painting/decorating... Not even to a ridiculous level, just basic stuff.
Think good old Mrs Margaret wanting her new lounge painted but not keen on a male tradesman. She browses a bit of Internet search pop ups in her area and she stumbles upon a lady to do the job.
Is there not a gap in market for this? I know it's not legal (I think?) to advertise you are a woman painter/decorator, but surely it's fair obvious if you call yourself Sophie Painting PLC 
Could this be a possibility for me to consider if I want to earn a bit of extra cash? I'm a fab painter and very passionate about home decor.