Some things to bring:
Media:
Well that depends on your medium but really I'd like everyone to have a sketchpad and some pencils/pens as a minimum. You need to be able to make some notes. The A3 hardback ones are best for quick sketches, Easons sometimes do a pack of two for about £13.00/ 20 Euro. Critical thing here is that you aren't precious about the paper for notes and warm up sketches.
Depending on your preferred medium you may want:
Oils: Paints, Brushes, pallette knife (if you want), canvas/canvas boards. Some rags or kitchen roll to help with wiping and cleaning brushes. Optional extras are: If you wish to paint with oils indoors you should bring some 'Sansodor' as a substitute for white spirit/turps. Liquin medium this will help with drying of the paint.
Acrylic: Paints, Brushes, an acrylic paper pad or some canvases/boards. Optional extras are: A stay wet palette (you can make one from an old Ferrero Roche plastic box, just bring the box an I'll show you), a little water diffuser, water jars and some water and some rags/kitchen roll. Painting knife if you want.
Watercolour: Paints, Brushes, Some white mixing space eg small saucer, Water container and a couple of small plastic cups (one for clean water and one to clean brushes), Watercolour paper - preferably the pre stretched paper in a gummed block.
Ink: Little bottle of chinese ink. Cost from around £3.00. Drawing tools - sticks or bamboo pen. Brush for washes. Thick paper/watercolour paper. Some pots for washes, sea shells work well. Water bottle.
Conté: Conte crayons, paper with some tooth. Optional: spray fixative.
Charcoal: I'll bring some!
Pencil: 2b, 4b, 6b. A hard backed sketch pad (A4 size if you're not sure) and a shrpener. Optional: and a bulldog clip (to clamp your sketchbook open and closed) and a Staedler white rubber.
Graphics Pen: Range of Widths eg 0.1, 0.3, 0.5. You can buy these in a pack (I use Mitsubishi uni pin). Smooth paper sketchpad. The smooth paper is good as it will allow the pens to glide over the page.
Setup:
Whatever you need for being outdoors but a small folding stool is good or you can take a plastic chair from Oideas Gael. You need a plastic bag or backpack for your stuff. Optional: A 'backpack stool' is good as it holds your stuff and folds out to sit on (great as hand luggage at airports as you can sit in the queue, look up 'fishing stool' online for options, zip pockets are best if you can get them otherwise you loose stuff). An easel is good for painting work but some of these are available at Oideas Gael but bring your own if you have one.
The weather:
A sturdy pair of shoes for walking. Clothing layers, a hat to keep the sun off, suncream and sunglasses for looking at your (briefly) white canvas/paper in the sun. And just in case it rains: umbrella (there are some we can borrow at Oideas Gael) and a rain jacket.
Other Stuff:
Camera or tablet: Good if you want to take some snaps to work on later or at home.
Old clothes! We gotta splash that paint about!
Drinking water.
Snacks/ lunch depending on location.