My Dad's A Geek Shirt by Urban Smalls My Dad's A Geek onesie and t-shirt by Urban Smalls. A soft, 100% cotton, onesie (sizes 0-12M) or t-shirt (size 12-24M) in mint green or pink with a contrasting ringer trim. A fun shirt for your little one to show some love for their sweet papa! A great baby shower and new dad gift! Color: Green Pink Size: 0-6M 6-12M 12-18M(t-shirt) 18-24M(t-shirt) Price: $21.95 Also in Pink. Camouflage Messenger II Diaper Bag by Diaper Dude $85.95 33 Uses for a Dad by Harriet Ziefert $12.95 Out of stock.