For our 10th we went to Hawaii. If something like a trip or short weekend is out of the question then.......
Get a babysitter for the weekend or at least 1 night (where your child sleeps over somewhere else). Make him his favorite dinner, wine, and YOU be dessert in a nice little outfit, you know his tastes. IF you can't have your child sleepover somewhere, then try to get a reasonable hotel for 1 night just the 2 of you and go have a nice dinner, etc.
Some men like the dolled up lingerie in heels and others are the cute booty shorts and tee.
Make your time together a night you won't forget and create new menories and maybe new traditions!
Also, if you don't do date night, I recommend weekly date night. We've had date night since we've been together (almost 25 yrs). You don't have to be extravagant for date night.... We've done everything from a long walk to sporting events, concerts, horse races, golfing, great restaurants, etc....