One can purchase powered mixers from any local IKEA shop. One can also purchase powered mixers online from Amazon, Best Buy, eBay, Sweet Water and Harmony Central.
Due to the amerage required, there are no mixers that are battery powered.
Very few powered mixers have a USB audio connection, but you can connect the line output out of almost any mixer to the inputs on the Mac to record with GarageBand.
There are no solar powered mixers on the market; however, the first mixers were indeed manual. A simple turn handle rotated a gear which in turn spun two beaters.
One can purchase stand mixers at most High Street department stores and electrical retailers. Online they can be found on eBay and also on the Amazon website.
One can purchase DJ mixers are a number of different locations. There is software available on the DJ Today site that is not very expensive and used by many people.
Breadtopia is a great place online where one may purchase Bosch Universal Mixers. They come in a variety of fun color options and provide free shipping.
Chemical mixers can be purchased from many companies that sell machinery and equipment for the chemical industry, such as Sower. There are also websites that offer used chemical mixers from a variety of brands, such as Machinery & Equipment Company.
You can purchase some microphone mixers from Best Buy (the website and the store), Amazon, Shure, eBay, Guitar Center, Musicians Friend, and RadioShack.
Silverline and Makita are some good brands of plaster mixers. One may find these on the Permagard or Tesco web pages. Companies such as eBay and Baato provide the opportunity to purchase plaster mixers at lower prices.
If you are interested in purchasing a margarita mixer, then you will find several online retailers available. Walmart, eBay, and QVC are just a few of the retailers that offer margarita mixers.
There are many retailers where one can purchase a gas-powered remote control car. One can purchase a gas-powered remote control car online at Amazon, eBay, and XenonProject.
General music stores do not often carry mixers or multi-track recorders. You will want to find a music supply store or go online to purchase these.