Most electronics stores (eg. Best Buy, Radio Shack, Circuit City) carry portable home radios. Make sure you know the dimensions of the area you plan to keep the radio so you purchase one that will fit.
I'd suggest going to amazon.com to purchase a digital portable radio. You'll be able to find discounted ones as will as a plethora of brands. Some brands include Sony and Sangean.
Emerson makes some good portable models including the RP6251 with a weather radio.
The phillips portable radio has approximately 300 hours of battery life. So, if battery life is important to you then the Phillips portable radio would be a good buy for tunes on the go.
There are many places where one can purchase ShelterLogic portable garages. A good place is the website "eBay" or the website "Amazon" to purchase ShelterLogic portable garages.
I would recommend a portable radio that has only a few buttons easy to carry around and is attractive in appearance. Sony makes very good portable radios I would look there first.
Amazon and Ebay are usually the best places to go for affordable products. Both have ample stock of portable humidifiers, for a very affordable price.
One can purchase good portable air compressors from Home Depot where there are many available for prices between $50 and $600. One can also buy them from eBay.
There are many places online where you can purchase a portable tachometer however, you may want to go to a website like PriceGrabber.com to get the best price.
You can buy a digital portable radio at Best Buy. They have a good selection. Here are four that you can compare right next to each other: http://www.bestbuy.com/site/olspage.jsp?id=cat13504&type=page&pageIdentity=searchDriven&useProductString=true&productString=1218231082609*1166840038036*1205537512504*1205537512435&unProductString=1218094581941*1218099650634&catId=abcat0206006
Good places to start with would be Radio Shack, Amazon, and places like that. Read the reviews on the different types of portable shortwave radios to find the best one.
Pretty good size. I had an early one and it was about the size of a small box.
You can find discount portable IPOD speakers on Amazon and eBay. But you can also find them at a good price at WalMart, Target and Radio Shack. For a little higher price but excellent quality, try the JAMBOX wireless speakers which can be purchased online or in stores.