Solving unusual problems

I rescued a cat last November. He had been recovering from his injuries and had mainly been sleeping under the table. Now he is recovering fast and favours sleeping on the table. He is also lively enough to take an inconvenient interest in what I am doing (and eating). 

Yesterday I moved my acrylic painting upstairs out of Jet's way. I thought that using my downstairs easel slope for pen and inks would take up less space with a big cat lying on the table. 

So yesterday I tried to work on a pen and ink drawing that had been put away for a while. 

Jet stepped on it and when I tried to stop him I got scratched and he threatened to bite me. 

Today I had to find a solution that would allow me to draw without a confrontation. I climbed into the attic to try and find materials to make a barricade. I found an old slatted shelf and some bits of wood and the remains of some very old wood glue. 

Here is the result (with cat):