Scrounge around for some pictures of you and your mate together from when you first started out dating and wooing. Make a collage and put it on the fridge to remember your pre-baby lives.
It can be as easy as tacking up a few old favorites that have been sitting in a drawer (bungee-jumping, white wine tasting, skinny dipping?) or as state-of-the-art as you want.
I did this for our dating-aversary using Kodakgallery.com a few years back and it was a big hit (still on our wall!). If you go this route, you’ll want to pick a square number (4, 9, 25…) to avoid the weird repeat feature. You can use as few as four pictures or as lots of as a hundred.
Looking for other ideas? here are 50 ways to be low-cost on Valentine’s Day without looking cheap.