This is a simple idea that I came up with by myself. I was looking for a means to enter high functioning lots-of-beta-waves modes without the use of chemical stimulants. What I found was that very bright light works really, really well.
I got the brightest light bulbs I could get cheaply. 105 watts of incandescents with halogen gas, billed as the equivalent of 130 watts of incandescent light. And I got an adaptor like this that lets me screw four of those into the same socket in the ceiling. The result is about as painful to look at as the sun. It makes my (small) room brighter than a clear summer's day at my latitude and slightly brighter than a supermarket.
I guess it affects adenosine much like caffeine does because that's what it feels like. Yet unlike caffeine, it can be rapidly turned on and off, literally with the flip of a switch.
For waking up in the morning, I find bright light more effective than a 200mg caffeine tablet, although my caffeine tolerance is moderate for a scientist.
I have not compared the effects of very bright light to modafinil, which requires a prescription in my country.
When under this amount of light, I need to remind myself to go to bed, because I tire about three hours later than with common luminosity. Yet once I switch it off, I can usually sleep within a few minutes, as (I'm guessing) a flood of unblocked adenosine suddenly overwhelms me. I used to have those unproductive late hours where I was too awake to sleep but too tired to be smart. I don't have those anymore.
You've probably heard of light therapy, which uses light to help manage seasonal affective disorder. I don't have that issue, but I definitely notice that the light does improve my mood. (Maybe that's simply because I like to function well.) I'm pretty sure the expensive "light therapy bulbs" you can get are scams, because the color of the light doesn't actually make a difference. The amount of light does.
One nice side benefit is that it keeps me awake while meditating, so I don't need the upright posture that usually does that job. Without the need for an upright posture, I can go beyond two hours straight, which helps enter more profoundly altered states.
After about 10 months of almost daily use of this lighting, I have not noticed any decrease in effectiveness. I do notice I find normally-lit rooms comparatively gloomy, and have an increasingly hard time understanding why people tolerate that. Supermarkets and offices are brightly lit to make the rats move faster - why don't we do that at our homes and while we're at it, amp it up even further? After all, our brains were made for the African savanna, which during the day is a lot brighter than most apartments today.
Since everyone can try this for a few bucks, I hope some of you will. If you do, please provide feedback on whether it works as well for you as it does for me. Any questions?
Depends on how the bulb is build. The important factors are
Most old-style incandescent bulbs have a simple build, and higher watt bulbs usually have a higher color temperature, and somewhat better efficiency. So, 4 60W would be severly different from 1 240W (such bulbs have been sold in the past, though not anymore; people prefer halogen for that now, because higher temperature incandescent bulbs usually have a much shorter life).
Halogen bulbs (I am always talking "quarz halogen" here; without Wikipedia I wouldn't have known others exist) are usually build for a specific temperature, and then you buy the wattage/brightness in lumen you want (where I live practically all halogen bulbs come in 2900 +/- 200 K); so you buy spot with 2900K, and have available everything from 10W to 40W, or a 300W "stick", again with 2900 K. Higher color temperature are available, but usually not at your first supermarket. BTW, you get around 4900 lumen for a 240W halogen stick.
With LEDs and CFLs everything gets fucking crazy. Whatever color temperature you prefer, don't get below a CRI of 85. It makes pictures look crazy, and after a while you want to rip out your eyes. 90 is really good, for professional photo work only 100 is 100.
Another guide for room lighting (personal experience): 2 klm at 20m² is just a bit more than cozy, 5 klm per 20m² are good enough (you can read, learn, work), but not office style. If the OP means "small room" at about 15 m², he should have the equivalent of 12 klm at 20m², which sounds about right for "feels brighter than winter outside", but it would not be (at 47 degrees north, that is).
Although having real bright light matters, to feel brighter you might want to make contrast. Your eyes/brain tell you "less bright" if everything has the same luminosity (that is the reason why on a cloudy day it feels darker on the outside than in your apartment, but as soon as you take a photograph you recognize it isn't). So: Get a dark spot somewhere.
Also note that sales of incadescent bulbs stronger than 60W are now forbidden in the EU and perhaps even some non-EU countries because of environmental concerns (incadescent bulbs being fairly inefficient at converting electricity to light). I used to import 200W bulbs from Russia to EU before they were banned in Russia as well.