Don't worry, it will not staple your flash chips, it will just help to program ones. To be presise, it is just a pogo pin programming clip.
What it is useful for? Sometimes you need to flash a device, but you find out that the pin headers for programming are not soldered in. If you are not lazy (or have time and inspiration), it is not a problem: just solder out the pin headers, and the problem is solved.
But what to do if you don't want to spoil the device with the alien parts, or you just got tired of spending your precious time for such a creative work as soldering pin headers? Of course, make the Flash Stapler and change the World (by re-flashing part of it)! It is not hard to make: just buy some pogo pins and pin header, print the thing and assemble it.
Printer:
RepRap Mendel
Rafts:
No
Supports:
No
Resolution:
0.3
Infill:
15
Filament:
3dplast.biz ABSnatural
Notes:
IMO infill can be more than 15%, and resolution can be better than 0.3.
*Pogo pins (1.36mm diameter, 33.3mm length): from 3 to 6, depending on what you want to program (e.g. 4 pins for ESP or STM based devices, 6 pins for Arduino Pro Mini, etc.); *Pin headers: from 3 to 6 single row pin header (corresponding to amount of pogo pins). *Some plastic for 3D printer (ABS is definitely good, for other types make sure it is not a conductive one).
The pictures below show how to solder pogo pins with pin header and insert it into a printed housing.

Housing, pogo pins, pin headers







Here is the video how to assemble Flash Stapler.
The pictures below show how to assemble it step-by-step.









Using of Flash Stapler for programming Sonoff wifi switch, is shown here.
The author marked this model as their own original creation. Imported from Thingiverse.