Economical watch winder
Discussion
I would recommend your wrist, to give it a few shakes every day if not wearing. Doesn't get more economical than that 
Kidding aside... I'm not sure what the benefit of a watch winder is, really. My understanding is that no harm comes to an automatic watch when not running; it might even benefit from reduced mechanical wear, so long as not left dormant for months / years. I have half a dozen of various values and vintages, all running fine, accurate enough, never serviced.
If you just want a jazzy bit of kit, on the other hand, no other justification is needed
Others will no doubt have other views..

Kidding aside... I'm not sure what the benefit of a watch winder is, really. My understanding is that no harm comes to an automatic watch when not running; it might even benefit from reduced mechanical wear, so long as not left dormant for months / years. I have half a dozen of various values and vintages, all running fine, accurate enough, never serviced.
If you just want a jazzy bit of kit, on the other hand, no other justification is needed

Others will no doubt have other views..
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