Acrylics Plein Air Painting Checklist:
A selection of acrylic paints
At least one brush
Bottle of water
Cup for washing brushes
Paper towel or cloth for wiping brushes on
Paper, boards, or canvas
If necessary, an empty bottle for pouring dirty paint water into, for disposable back home.
Tips: Consider using pieces of primed canvas which you tape to a board (foamboard weighs the least), then roll up when the painting is dry. Back home you can stretch them onto stretcher bars or glue them down onto a board.
A disposable paper palette makes cleaning up easy.
A moisture-retaining palette with a solid lid makes it easy to transport your paints.