Part-serviced dad's MTB. Degreased, cleaned and lubed chain and cassette, cleaned the externals of everything else with car shampoo, serviced rear derailleur including lubing jockey wheels, unfortunately the hanger is bent so have ordered a new one online. Repaired an inner tube, replaced a rim's sketchy looking tape, etc.
I would like to do the tyres tubelessly one day when I get the time. The problem with my dad is he owns 5 very good bikes, which you might think a good problem to have, but the servicing obligations really add up. I'd rather have a town bike and one-two good bikes, which I'd look after immaculately, than a wide stable that takes a full weekend to maintain.