If you are a worldbuilder or mapmaker working at a global scale, it can be helpful to have an actual globe to guide you. If your world is an alternate Earth, then you are in luck. You can go to Amazon or troll the thrift stores and garage sales for a cheap globe of the Earth. All done.
For the rest of us, the globe we need cannot be found in any thrift store. So we make our own.
The above is an 8 inch desktop decorative globe I bought at a furniture store. Globes run for about $15-$30 at stores, or cheaper if you can find them used. What you want is a sturdily built globe with no raised relief.
Accuracy is not important. Any out-of-date borders and countries will be slathered over with a couple coats of gesso. Gesso is a type of acrylic paint that creates a toothed surface that can be painted on. You can buy it at any art store in bulk for pretty cheap. It's a good thing to have around.