Stanley low angle block plane. Way better than the small hobby planes.

Sandpaper, with several different grits. I like a course grit in a block. Like 60-80.

Razor blades.

Look for a Marples trim saw. It has a replaceable, backless, japanese style blade that is wonderfully effective.

Another cool thing I have been doing is building over glass to protect my plans. One of the best things I have discovered in the last few years.