Resources:
Extension Cords: I have gotten good deals from the following places:
Home Depot: They usually have a price reduction a couple of times a year. I used to be able to get a 100' 16 ga orange cord for $9.99 but he best deal I've seen lately is $12.00. If you're looking for the 6', 9' and 12' indoor types wait for the after Christmas sales when you can get a three pack for $1.50.
Wal-Mart: Same as Home Depot and keep your eyes peeled for those price reductions
EBay: Do a search and you never know.
You may get a rippin' deal. I have found good pricing on the heavier cable I
use to run power to the far reaches of my yard (200'). I use a four
conductor 10 gauge cable and run two 30 amp circuits to a spider box (multi
outlet box). Here's where I got my latest cable:
http://stores.ebay.com/Genuinedealz AND
http://stores.ebay.com/empirewireandsupply
I have enclosures from www.FiboxUSA.com They have a clearance flyer they put out from time to time. Their boxes are great. Flip latches and I have have some with clear lids.
Another great source is:
yourbroadbandstore.com
I have used old PC computer power supplies like this:
here
I also have a few of these: here