Congratulations isabel - how many years is this? And by th way, how old is you skin-child? Boy? Girl? I'm just being nosey!
Anyway, what we used to do on anniversaries when the kids were small was just to have a nice dinner at home, let them help. Made sure they had crayons and paper so they could make us a nice card. (which of course i would then put on the fridge) We rarely had babysitters either.
But, if you get a chance, you could make your hubby a "coupon book" - with coupons for things like "your favorite meal", "a backrub", "hugs and kisses", "a massage", "footrubs", & special stuff like that. I did this for Valentine's Day one year and he loved it! When you're broke, you have to get creative!