If you don’t have the original box any office supply store sells boxes and packing material which will usually be cheaper than UPS. If you can take it with you or the measurements to make sure you buy the right size.
It's best to use original box and packaging, but if you don't have that, UPS Store sells boxes and packing materials to package it for you. If you use original box, would suggest getting a bigger plain box to put it in so it's not obvious what's in the box
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