I have 5 Mini Palm Paddles sitting in the cupboard at home. Unfortunately, they all belong to the Graz Morse Code School. It would be so interesting to auction them off one by one on Ebay 
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The 3D printed versions look quite good:
It is purely my own personal taste, but I prefer the Palm Mini Paddle to the Pico Paddle. If you really can’t find a seller, you should seriously consider making your own.
73 de OE6FEG
Matt