Brush rest
It’s always a problem when you have brush all in paint and you have to run for… couple seconds? Here is easiest and cheapest solution 
Craft supplies
Toilet paper roll
Scissors
Acrylic paint, brush
Directions
Bend paper roll by length 3 times (all the sides supposed to be around equal )
Make 3 “V” shaped cuts on one of the folds
Paint it, let it dry. Ready to use!