There is no single thrift store or charity shop where you’re going to find all the small appliances you are shopping for. Which something I can tell you for sure being somebody who visits these shops a minimum of four to five times per week for the past three years running, so I better than anyone can tell you where to thrift to find the kitchen items you want for your first apartment.

Would you like something that's vintage?

Want a stand mixer?

Perhaps something that's handheld?

Charity/church-run thrift shops are best for the small appliances you are interested in picking up.
Typically speaking, charities/church thrift stores mostly have vintage electronics, clothes, and furniture
Remember, at thrift stores you're allowed to plug in electronics to see if they actually work or not.