I think the exact same can be said with a number of things. Chocks, tie downs, cowl plugs, control locks, pitot covers etc. are just a few things that come to mind. Some are easier to forget than other. Also, some are much more detrimental than others!
Back as a student pilot, I had fired up with the chocks still in place. The aircraft were always parked on the ramp, which of course had a slight slope. So much that it would be wise to leave the chocks in place until you are ready to jump in. After a mild slip in common sense to remove the chocks, I did in fact have enough common sense to realize that something was up when I it was requiring additional rpm to proceed DOWN a slope.

..... SO thankfully, my instructor hopped out and removed my chocks for me. Double faux pas looking back

I now do a quick once over glance at everything for any abnormalities prior to jumping in after I have done my walk around. 2nd point to draw from that, if it seems out of the ordinary -- it more than likely is! eg. "Hmm, It usually takes 1000rpm to taxi vs 1400 and I'm still not moving!"
Just remember if you require additional RPM for take off, check for the cement tire tied to the tail. If you required additional RPM to taxi back to the ramp ... check your gear
