You will know what I am talking about if you have a rotary cutter and the matching ruler... the ruler (while wonderful in many ways) is impossible to pick up without using your finger nails (and bending and/or breaking them in the process), and requires the use of your feet to hold it in place as you cut!
So, imagine my happiness when on my rounds to find a specific embroidery thread yesterday I found this....
2 little suckers hold it in place & it works!
You can also get the 'door knob' one - as seen in the picture. A whole bunch of happiness for under 7€