Go the DIY route...
How about a personalized coffee mug that he can use at home or at work, featuring his children's smiling faces? You can get this done at most film developing stores, drugstores, or there are a ton of great companies online like http://www.thephototouch.com/products/photo-mugs.php that offers various style for $15-$25. Or if he has some old sports or concert tees that aren't being worn, or have seen better days, why not make a t-shirt memory quilt? Check out EcoKaren's blog for a great tutorial.
|The Quilt Loft|
Don't have the time to put into a DIY gift...no worries! Here's a few more ideas for any dad.
If he's a businessman, try this great computer bag from Greensmart, featured on Abe's Market.com, available in 4 great colors.Wilson has a bag made from recycled material that saves landfills 12 gallon-sized plastic bottles each! Want to take the golf game to another level of green? Walk the course. It will give you both some great exercise, plenty of quality time to chat, and it saves the gas and/or electricity to power a golf cart.
thedailygreen.com that is made from half recycled cotton and half recycled polyester. And if he likes to lounge around the house on the weekends, give him a soft, comfy robe from Coyuchi, made from organic cottons and linens. There are several varieties from waffle weave to furry terry cloth.
Give him a new wallet, like this one from Modernstyleorganicliving that's made from recycled inner tubes.
Abe's Market, has a great line of products that will keep him looking great!