Note: If you don't feel up to the full pendant conversion perhaps just consider the simpler Solar Easter Egg Instructable => http://www.instructables.com/id/Solar-Easter-Egg/
Step 3: Safety alert ...
Step 4: Rain gauge !
BEFORE tackling the more ambitious lamp conversion however, consider simple LED "cover" fun! .All sorts of everyday items light up a real treat when illuminated from within. Perhaps the most rugged translucent covers are table tennis/ping pong balls- simply piece a hole in their bottom & place over the LED. Simple designs & messages can be further written on the ball surface to suit.
Note: Try to avoid using orange table tennis balls as their colour looks rather too "flame" like & at night it may be confused with a real fire...