I've got a cheap $150 Prusa clone 3D printer. It works well, but it does not have a function to raise the print head up on the z-axis so I created this little print to save a load of twisting of threaded bar and re-levelling every time I want to unblock or change the nozzle/hot end.

It is designed to raise the print head by approx. 150mm but you can always resize in your slicer to your requirements.

It takes around 5 mins (with zero effort!) and according to Cura uses ~0g of filament.

If any of you lovely makers manage to get it to stick to the print bed and actually print one then please do send over a pic :)