Panasonic has the answer for this, at least in terms of the good old A-type light bulb. Their new LED bulb works in the old type lamp base, but uses only a fraction of the energy to produce the same amount of light as the old style of bulb. At 4.4W it also has an extremely long life span ... in the region of 40 years based on just over 2.5 hours of usage a day.
But what I like best about it is that it simply looks right. The clear glass of the bulb and its familiar shape are simply comforting.