As you can see I switch from one project to another all the time. I recently bought this lovely cake, fresh from the oven, and nicely risen. It came from Ana Correia .
I managed to fill some jars with flour, sugar etc without making a mess.
I used a narrow straw that fits inside the jar.
Dip the straw into the powder you are using and hold your finger over the top when removing it. The powder will stay in the straw, just like at school when you use a pipette for lifting liquid, yes, even I remember that far back. Mr Saunders, my science teacher would be proud of me!
Lower it over your jar and tap gently if you need to. Here are the jars, one with semolina, the other with flour just waiting for their labels and you have a nice clean table!