Our church sponsors an annual weekend of service, in which members go out into the community to serve meals to the homeless, fix up bedrooms of kids w/ terminal cancer, pick up trash, spruce up school gardens, assist on Habitat for Humanity builds, etc. My project each year has been to clean up and repair used bicycles for the Community Resource Center, which then donates them to needy local families, either as transportation for the adults or Christmas gifts for the kids. The guys generally bring pretty decent assortments of general purpose hand tools, but they are always impressed by my bicycle-specific goodies: Park shop stand, VAR truing stand, bottom bracket wrenches, chain riveter, spoke wrenches, freewheel pullers, lockring wrenches, crank pullers, chain whip, cog/freewheel vise insert, etc.