It's funny... I started this thread to come up with the smallest workable set to travel with, got some great ideas and have proceeded to just keep acquiring more chips and expand all my sets. Chipping is like the N+1 rule, except N+20 or N+100 since you never know when you'll need that extra barrel or rack.
In all seriousness, this thread has given some interesting ideas. Oh and a great reason to keep buying chips