Harbor Freight (an excellent store for guys who want cheap tools) had a sale on a small pancake air compressor.
This air compressor is 1/3 Horsepower, 3 Gallon, 100 PSI Oilless Pancake Air Compressor. Air Output at 40 PSI is1 CFM and Air Output at 90 PSI is 0.6 CFM. In other words very very small. However my goal for this is to only use it for simple trim work. So I purchased a 2 in 1 brad/finish nailer which requires 0.5 CFM at 90 psi. We had a spot where a piece of the cabinet is missing in the kitchen. At first I tried to use wood glue to put it back together but it just fell down once my son grabbed it.
The air compressor plus the brad nailer made this job so easy. It is true the right tool for the job makes a world of difference.