Well Its so dry here I built a DIY humidifier the one with the bottle and the air stone you see all over the internet, but it sucked so bad It was intended for a much smaller environment.
So I built a real Humidifier intended for a much larger space.
Here is what you will need to build your own Evaporative self regulating Humidifier on the cheap.

Step 1: What you will need

First a pet water dish with automatic refill.
A few super thick sponges
A small fan with switch (very quiet one from radio shack)
A tupperware plastic square bowl that is about the same size as the open part of the water dish
4 screws or bolts/nuts
 Hell YES! This instructable is so much what I need! Thx for sharing' !
I know this is 2 years late, but I found this because I Googled DIY&nbsp;humidifiers now (in January&nbsp;2010), so others might still be interested years later too. My suggestion for preventing mold for the sponges is to periodically rinse them out, squeeze out excess water,&nbsp;and zap them for 45 seconds to 1 minute in the microwave. This will pretty effectively sterilize them, and as long as you have a microwave in your home, it so quick, cheap and easy to do that you can do it often enough (even weekly)&nbsp;to make sure mold or bacteria will never be a problem.<br /> <br /> Also, the dollar stores in my town sell not only one sponge for a buck, but packs of 6 or even 8 sponges for a buck. You may need two or three to get the size right,&nbsp;but still,&nbsp;it's a very economical and easy replacement to keep mold from encroaching.<br /> <br /> BTW, I do the microwave thing every week with all spongeware around the kitchen sink (dish sponges, brushes, and wipe-up towels), and with my cutting boards. If you start doing this too, just make sure your dish sponges aren't mixed with metals (like the ones for heavy-duty scouring). Those shouldn't go in the microwave, obviously.<br />
Good build. But the picture with horrid-green writing could be improved (even MS Paint can do straight lines). L (And you spelled evaporative as evaprative twice)
Oh thank you It was so late when I published it 4 or 5 am thnx
I like it quite a bit. When I saw this instructable I had expected it to be like the one I made for my snake's cage, but mine uses fog blown into the cage to humidify it. The only thing I have to worry about yours is that fact that it uses standing water and water in sponges. The sponges hold in water in such a way that often brings in mold, which could make your room smell bad. That's the only problem I have with it, but since you're using it I imagine somehow the mold's not growing.
Yes that is a concern, but the sponges are not hard to replace (at $0.97) and you can always add a drop or two of bleach. Its so dry right now that mold does not grow. I'm having to fill the water back up about once a day.

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