Small is good because it's real. Most of life consists of small and ordinary things. Much of what we do, most of us, most of the time, is not to pull the big levels of power but to deal with small things. In a church, for example, it would be a word of welcome to the stranger. It's astonishing how many churches haven't mastered the art of sustaining the word of welcome.
Churches fall in love with themselves and take care of themselves.
Small, simple but powerful. Care of material things is often an indication of whether someone appreciates the contrast between the small and the large. The typical form of establishing independence or rebellion against one's parents or authorities is to keep one's room a mess. But learning the value of small things and taking care of them may be a predictor of whether you can be trusted with large things. Jesus had something to say on that subject as well.