One of the best sites for this is Spreadshirt. The site is very user friendly and straight forward. To design your own shirt you simply hover your computer mouse over the "design your own" tab and choose "custom t-shirts".
these nuts
They only have them online.
To design a custom pen you with a logo or motto you can contact Staples promotional products in store to make the pens. You can find custom pens online at Custom Ink.
Espguitars.com u can make a custom guitar but it's expensive like a couple thousand $. I think u can make them at jacksonguitars.com too.
You can find templates to make personalized custom calendars at VistaPrint, the Walmart website also will allow you to upload pictures to make your own calendars.
Try the links below.
You can paint them yourself, or look for a seller online.
Custom stationary is best if you make it yourself. If you don't have the time, then you can order online. These online sites typically have different order times so make sure you check how long it will take to deliver.
There sure are. You can make custom kids swim trunks at thegingerhouse.com. They have a wide selection and the prices are very reasonable.
There are many online companies that offer blank t-shirts. Among these online companies are "Customink", "Deltaapparel", "Shirtchamp", and "Shirtspace".
There are online companies that can make custom balloons using your artwork and then send them to you. One great site like this is http://www.extratwist.com/.
You can purchase custom picture frames online from websites such as AmericanFrame, PictureFrames, and Giftsforyounow. You can also locate a more local based store that allows you to order custom frames by searching online.