Ice machines come in varying sizes, depending on what kind of size you classify as small. I've personally seen one the size of a refrigerator and one the size of a mini fridge.
Portable ice machines are fairly readily available from retailers like Walmart and Bed Bath and Beyond. They are also available online form retailers like Amazon.
Ice machines of all sizes are still available for purchase. Portableappliance has many for sale depending on both size and need, for personal or business use.
Scotsman has several sizes available for ice machines. Most of them are meant to provide for a medium sized restaurant.
There are several sizes of portable beverage coolers available for purchase. Small ones offer space for up to six cans - larger ones can hold up to twelve of cans (both using ice for cooling). Finally there are also more professional coolers available running with 12V battery. Those can hold up to 30 cans.
Some options for ice machines that do not require a water line connection include portable ice makers, countertop ice makers, and manual ice cube trays. These machines can produce ice without the need for a continuous water supply.
Portable ice machines are so popular that almost any store that carries small appliances will have them. Some good places to look include Sears, Walmart, Target, Best Buy, and Amazon. The advantage of Amazon is that you will be able to read numerous reviews for each model.
Target offers ice machines but they are all new ones. Used ice machines are available from ebay, http://www.icemachineclearance.com/product-list.php?cid=1, and www.nextag.com.
Yes, they have machines that dispense it for free.
Cornelius ice machines are available through warehouse stores for home use or business use. Ice machines can be delivered and installed for an additional price.
Air-N-Water.com carries a range of portable ice makers and ice machines for all of your ice making needs. Receive an online discount plus free shipping on
many stores such as target, walmart, kmart, sears, and other big stores and wholesale stores such as Cosco's and Bj's sell all kinds and brands on portable ice machines. You can also check on Amazon and Ebay.
Depending on what brand of machine you use, portable ice machines usually make around 25 to 35 pounds of ice per day. Your budget will influence what brand you get, and therefore the production of the machine. For some examples: An Emerson Portable Ice Maker makes 26 pounds per day, a Koldfront Portable Countertop Ice Maker makes 28 pounds per day, and a WindChaser ICM15S makes 29 pounds per day.