you should include ALL work on CVs not just "proper jobs".
fill the gaps with info on these smaller personal jobs, such as "designed brochure for 'the thingummydoodah company"
and "responsibe for the visual reworking of the marketing literature for "the flibbertygibbert association"
or even more personal stuff like "assisted my husband/wife on producing menus for their new restaurant"
- you don't have to mention family though - you could just put the name of the restaurant.
it is all professional work, whether you did it as a favour or just worked for a pal
you can also use an opportunity like this to give yourself a good title such as designer, art director etc etc