I can't believe that 10% of young UK adults cannot (or won't) change a lightbulb! Bulbs are usually Edison or Bayonet fit. Find out which, then buy a replacement. If it's neither, then Google it e.g. spot lights have diameters in mm.
I can sew on a button no probs. Most of my trousers will lose the top button at some point, so a bit of practise and job's a good 'un.
I'm not very good with tools though e.g. for wood or metal work, and I was crap at CDT in school anyway, so I hire my carpenter friend to do decorations at my house at mate's rates, and he also stripped out my old bathroom and installed a new 3-piece suite, painted, tiled, floored, all the plumbing etc.