There are tons of obviously good uses for this, but maybe my favorite is that you can set them to become warmer after sunset to help maintain your circadian rhythms, and then dim as a reminder to start winding down for bed (and of course you can use them as an alarm to wake you up "with the sun" in the morning).
They’re expensive, but I typically use the Hue full-color system from Philips. Really easy to set schedules from my phone, though I also highly recommend getting physical Bluetooth(?) wall switches (and these little things for locking your regular switches in the on position). You can also use the white “ambience” bulbs which go as warm as 2200 (there’s sometimes an ambience “full-spectrum” option that goes even lower), but I would skip the non-adjustable “warm white” at 2,700 for indoor spaces you use in the evenings.
If you have the budget I think it also makes sense to get the brightest bulbs available—you can always set a lower default brightness for when each bulb is powered on at the switch, or you can set scenes that automatically dim and/or warm, but there’s a hard limit on brightness. Hue makes a 60w, 75w, and 100w equivalent for normal bulbs (800, 1100, and 1600 lumens).
Note that the 1600s are physically larger and might not fit in all fixtures.
Important note: if you’re interested in color, always select lights that are rgb+w — if they’re not capable of “white” you’ll never get that nice warm calming glow reminiscent of an incandescent bulb.
As an example: in the photo below, the ones on the left are the Twinkly curtain rgb+w curtain lights and the ones on the right are a test I got with the Twinkly rgb string lights (the only option in the size I needed). There are “16 million” colors to choose from, but without the white spectrum, none were what I was looking for (#FFCA64 if you have Twinkly lights and are looking for a nice warm white).
If you want to stay in the Hue world, you can buy Hue plugs for incompatible fixtures (like Christmas lights), but I tend to use Tapo plugs (browse the integrations before making a selection), and I recommend their dimmer kit anytime you have dimmable bulbs. Tapo plugs are how I manage timers for my seedling shop lights for Gardening and exterior string lights at my grandparents’ cabin.