Every time I go by Wal Mart I stop in and get at least a dozen incandescent light bulbs. We have four separate shelves in a spare closet; 40w, 60w, 75w, and 100. Now we’re starting on floods for the exterior.
“...get...incandescent light bulbs. ...shelves in a spare closet; 40w, 60w, 75w, and 100.”
To greatly extend the life of incandescent bulbs get a Lutron (or equivalent) Dimmer to replace each light switch in your home.
The Dimmer has a (thinner) switch toggle and a lever on the side of the toggle. Maximum bulb life extension can be expected when it is switched on/off at the minimum dimmer setting - less mechanical stress on the filament.
Use a 100w where you would normally use a 60w or less but set the lever to 60w or less of illumination.
Be careful not to exceed the total wattage of the Dimmer (600w?) if/when the lever is raised to maximum illumination of the bulbs of a multiple bulb fixture.
In my main room I use a 100w bulb in a lamp which is controlled by a Dimmer being mostly set to 60w thereabouts. It is set higher up to ~100w only when I sometimes need the greater brightness. It is set to minimun for use as a night light.
When going out expecting to be back after dark I set the Dimmer to minimum. The current ordinary 100w bulb has in the lamp a few years so far.
Extend the life of your filaments - get dimmers. :)