I'm excited to introduce you to the Flexetki. 

A fidget and skill toy that takes advantage of 3D printing and gives you a fully functional skill toy with no assembly or post processing. Just print, take it off the build plate and you're good to go!

The Flexetki is inspired by various prayer beads from all around the world (e.g. kompoloi, misbaha, chetki, mala, begleri, ... ), which were primarily used for praying in the past. In recent years, the skillful manipulation and development of tricks has almost become a kind of sport and now inspires a large number of people.

You can use the Flexetki as a simple hand candy and fidget toy by sliding the chain links through your hands or you can take the next step and learn advanced tricks and routines.

I'm not particularly good at it myself but still have a lot of fun with various forms of this type of skill toy. Feel free to watch videos on the subject, learn your first tricks and report in the comments if you like my design. 
I would be happy to share this hobby with the maker community and maybe welcome some of you to the world of skill toys.

Printing Tips:

UPDATE: New Version (v1) because I got some feedback that my original model was very hard to print. Only choose to print v0 if youre confident in your printer/settings :P

v1 Change: thicken up the support pegs inside the model - therefore you may need to wiggle it free a bit longer to get a loose flipping set but makes it easier to print (minimal width changed from 0.6mm to 0.9mm - see picture)

For optimal weight distribution and an easier start, I recommend using the manipulators built into the Prusa slicer. This way you can make the two ends with 100% infill heavier than the rest of the model (I used 15% infill). 

Also check for “Print small Details” / use arachne because the hinges are internally supported by small pins (that easily Break after printing) to print without support 

A model printed entirely with 100% infill also feels very substantial, but its a bit harder to do tricks with.

Have fun! :) 

If this toy gets some love I will upload more sizes, styles etc. but for now enjoy the standard version :)

Feel free to check out my other fidget and skill toy designs: https://makerworld.com/en/u/2571622071/collections/742268