Wash basin in 20 minutes

Spring is coming, which we look forward to. Come to your country plot, "dig" in the ground and then wash your hands. The other day, an accompanying woman traveling with me wanted to wash her hands. And I realized how you can make a simple and economical washbasin (medical dropper), for example, for a summer residence.
For this we need: plastic bottle, I have 5 liters;
2 straws for drinking drinks (I have a used ballpoint pen and the pen itself); the drill is 0.1 - 0.2 thinner than a straw; can drill, 2 screws 100 mm, screwdriver.
In the bottle cap, we drill 2 holes,
Insert one straw (rod), almost to the end
The second (handle): cut 10 cm and insert into the lid.
We fill the bottle with water and close the resulting lid.
To hold the bottle, we screw 2 screws, for example, 100 mm, into the board or wall at a distance to hold the bottle upside down.
Turning the bottle over, we get a washbasin with a continuous stream of water.
In such a wash basin, dust, leaves and other garbage will never get into.
Enjoy your meal after washing your hands.