we are on one nap a day too, Paul is 14MO, and our day looks pretty much like this:
7/7:15 wake up and play in crib
7:30 pick him up change diaper, give him a sip of milk and go to play in the livingroom
8:00 breakfast
8:30 change his pj's to dayclothes and continue to play
10:00 go out for a walk either to the park, or to see all the neighbours dogs
, or to visit gadnma who is just across the street
11:15/11.30 get home and have a snack
12:00 nap for 2 or 2.5hrs
2:30 lunch
3:30 we either go shopping, run errands, have a playdate, i always try to do something other than stay home
6:00 bath
6:30 dinner
7:00 bedtime (thank goodness, 'cause by this time i'm exhausted... LOL)