Oh my goodness how sweet!
I LOVE spoiling my wonderful husband so I know exactly how you feel!
Okay...here are some things I have done when money was tight and the kids were to little to leave for long...
CLEAN: I once wrote 100 reasons why I loved him on paper hearts and hung them with thumbtacks very dramatically from the ceiling in the foyer so he walked right into them coming in the door.
Take balloons to his work or fill his car with them while he is running and errand...they love stuff like this too!
Dress yourself and your child up in your best outfits, take a picture and frame it, present it to him with a homemade cake full of candles while you sing (wear the same outfits and eat as a family by candle light).
Fulfill one of his fantasies (clean or naughty). My husband once wanted to lie in bed all day, eat Doritos and watching every Clint Eastwood movie ever made. I bumped it up a notch by being at his beck and call the entire day...via a little bell. He got so into it he rang the bell to have me scratch his foot! (I only did this once.)
SEMI-CLEAN: Do any of the above and them give him a special massage after child has gone to bed (do it in his favorite "naughty outfit" or in no outfit at all). Completely pamper him...by candlelight.
Set up a tent in your beackyard, string Christmas lights inside and fill with blankets and pillows. Lead him blindfolded to the best camping trip he's ever been on!
NAUGHTY: Have a trusted girlfriend take photos of you and present them as a gift (remember guys are sooooo visual). My husband has a thing for 50's pin-up girls so I once did this with the 50's hair, seamed stockings, high heels the whole 9 yards (my girlfriend and I had a ball taking them too!)
Google "romantic ideas" you'd be surprised at what comes up!
Good luck and have so much fun!