There is an age old way of enjoying fresh radishes from the garden.  You simply make these very English looking bread and butter, radish sandwiches.  A hearty bread is a must.
Another twist on this is to make a spread with butter, radishes, and lemon, which works well on bread or crackers.  The proportions I used were:  1/4C butter, 1/4C radishes and 1 tsp. of lemon zest.  Whir it all together in a small food processor, and thin with a little lemon juice if needed.  Truly yummy!