Spray booth
Lots of people assume they need a lot of equipment when model making, but actually you can get by with very little equipment (good power tools are a great help). When I was in university there was a fantastic spray booth with water wall, turn table and fan system. But despite the fact that it was a joy to use, the spray results that I acheived are no different to my current high tech system, which is newspaper, two strips of wood to counter wind and an empty bit of space. A few things to consider though...Try not to spray below about 8 degrees C and ideally spray over 10 degrees C. Make sure humidity is as low as possible and what you are spraying is dry and even though outdoors, always wear a mask and work out wind direction before you spray to avoid accidents!