Caster City specializes in casters, you can find them there. You can also try eBay, Amazon, Caster Service, or other hardware places like Home Hardware, Home Depot, or Rona.
Soft rubber castors for chairs can be purchased at retail stores such as Home Depot, Home Hardware and Lowe's. U-Line has an assortment which may be suitable as well.
Many stores carry casters, it all depends on what size and type you need. Here are a few vendors to check: The Home Depot, Office Depot, Amazon.com, and Sam's Club.
Heavy duty swivel plate casters could probably be the best choice but medium duty swivel plate casters would also work. Globalindustrial.com is a great site if your looking to buy online. Your local department stores will also carry them.
Grocery stores and hardware stores often have a rubber or cork cover for a drain.
5 below and dollar stores and trendy stores
Yes! Casters are an absolute must. Casters will make your office space much easier. If you buy a low-profile chair with no casters, then moving around your desk will pain since you'll have to bend or try to reach something without moving you chair. My point is that if you're going to buy a executive chair for your office, save up money enough to buy that swanky new chair with casters than a bad chair that will slow you down in your work.
You can buy "Silly bandz" at a dollar store,wallgreens,drug stores and more!!
There are many places where one can buy casters and cart wheels online. This includes sites such as 'Castors Online', 'Ross Castors' and 'Wheel and Caster'.
Soft boots can be bought from many different stores and retailers. Some examples of stores that sell these products include West Marine, Kmart, and Walmart.
Sporting good stores like Cabelas, Basspro, Dicks or Wallmart, airsoft stores and fields, or online.
Wallmart, Kmart, Big 5 and some Dick's sporting-goods stores to name a few.
Most large sporting goods stores carry air soft guns, or on the web. Check Amazon.com