I live in Ellwood City, PA and once a year we have a junk day. Junk day is when you put anything that is larger than normal out for trash day. Junk day should be a holiday where I live because anyone who is anyone goes out looking for antiques, junk, or just about anything that may catch the eye. This year I skipped out on the event but my sister found an old iMac G3 for me. She brought it home for me and I decided to turn it into something useful.
First I took the bottom screws off the iMac which then exposed the heat shield. Depending on which iMac model you have, there are two ways to dismantle it. If you are unsure which model you have, I would go to YouTube. There are several videos that show you how to take the unit apart. Below is a picture of the first piece I removed. The second picture is the unit with the heat shield exposed.
Next I then took the hard drive (which I would recommend doing before you throw it to the curb for junk day), and then you will see the logic board. After you see the logic board you just have to focus on getting out the CRT. CAUTION!!!! CRT display's can carry a charge for years which can shock you if you do not handle it correctly. Please make sure you know what you are doing before removing it. I had my brother in law help me with this step since I didn't know about the shock risk.
After all the parts were torn out I then put the case back together. I added a towel and now my cats use it as a cat bed! Below you will see Miss Kitty checking out the bed. She is a little on the large side but I have caught her in the bed...just not at the right time to take a picture. The iCat is now a great hideout for my cats.
Please note: Do not throw away your computer on the curb without removing or wiping the hard drive. When I got this Mac it was in great shape. There was still plastic from shipping on it and the person who threw it away didn't realize their information was on it. Please do not make the same mistake when disposing of electronics.
Also, you can not throw away CRT monitors in your trash unless it is trash pick up day. Instead of waiting another year to toss it out, I took it to Best Buy. For ten dollars they will recycle it and they will also give you a 10 dollar gift card. So its an even trade.