Get a line tracer and some white tape, then remember that someday, someone else will have to trace those same wires and try to make your taped marks readable.
Forget "someone else", I need to tag everything so that an older, slightly stupider version of myself can figure it out.
Haps:
While I was out gardening, someone left a bag hanging on the front doorknob containing a small plastic bottle, and a form for a free water test. From the small print, the test was being conducted by a private company selling water purification equipment, and not affiliated with the city. I was supposed to put the bag back on the knob for them to pick up (leaving the "kit" unused if I didn't want to participate).
In a rural area it might be different, but this is the middle of a metropolitan area, with excellent (and extensively monitored) water quality. There just isn't any honest justification for this type of push marketing.
So, I filled the bottle halfway with brine from Bick's Hot Mix, filled it the rest of the way with 5% acetic acid, and then added a spoonful of sugar, some salt, and a pinch of skim milk powder (for texture). Pickle juice was my first choice, but the greenish tint was too obvious.
They wanted water from the kitchen sink tap, so I carefully labelled the bottle with "SINK WATER", using a black marker, so that there could be no mix-up, and also so that they could admire my lettering skills.
On the form, I put a local address, using the number of a house that doesn't exist due to an accident of geometry, and the phone number of a nice gentleman who will tell you the time at the tone. I tried to fill out the rest of the form in a manner consistent with someone who has spicy pickle brine on tap.
I dearly hope that this isn't a full-blown scam, and that they actually test the sample, and that confusion ensues. But if nothing else, my labelling might prevent them from reusing the bottle on some poor sucker.