What simple DIY fix that saved you calling a repairman and cost you nearly nothing

[DeadChat58]

Fixed a genuinely annoying squeaky door hinge with nothing more than a bit of cooking oil, took thirty seconds and saved me from an unnecessary service call I was actually considering

Curious what people's own version of this is, the ridiculously simple fix that solved something you were genuinely about to pay someone else to handle

[Jackson1]

Fixed a slow draining sink with a simple baking soda and vinegar combination that solved what I thought was going to require an actual plumber

[NatureBoyRyan65]

Reset a tripped garbage disposal with the reset button underneath that I didn't know existed for years, saved myself an unnecessary service call

[Megan81]

Cleared a clogged dryer vent myself with a simple brush kit, fixed a fire hazard I was originally quoted several hundred dollars to have professionally cleaned

[RayOfLight87]

Fixed a wobbly table leg with a simple felt pad adjustment that took literally two minutes and saved me from replacing furniture I thought was broken