i've got to agree with the veranda idea - if you are on a pitched roof rather than an apex job you can extend a small area (a 4x4 run of 3x2" flags gives a decent space) buy a couple of shiplap fence panels & run them in an L shape from the back of the shed across the back & down one edge of the flagged bit, the shed fills in the other edge & you leave the front open to make maneuvering in / out easier. if you put in substantial enough posts in the corners you can also hang a matching pitched plywood roof & throw some roofing felt on it (or use the clear corrugated plastic roofing sheets fom b&q) to give you a good covered work area where the stand can live or where things can be put while you are inside.
you can sell this to the missus as an ideal place to store the garden furniture etc. through the winter (& even use it for that if you really wanted!)
my own man-cave arrangements are a bit messed up at the moment. I'm currently in a 20x7 foot block shed however it is destined to be a prep kitchen for my new business so once the outside is rendered & i have the cash to start wiring up & plumbing the internals then I will be moving into a 6x4 ish lean-to on the end of the outbuildings. it is a fairly steep pitched roof so i'm planning to stick a few hooks along the wall at the high side to hang the bikes from & an old filing cabinet in the corner for spares. maintenance will be done in my 'other' block shed that is earmarked for equipment storage for the business but it will have a long enough free wall to have a home made fold away stand mounted on it with my tools sitting in the drawer unit on the worktop opposite.
half of the current shed...