well, you can but you need to mod it. its not that hard to do if you have a basic understanding of coding.
If you know how to make custom content then you can. Mod the Sims has a "how to" tutorial on custom content.
While you cannot make any new enchantments unless you make your own mod, you can make custom enchantments strengths using TooManyItems, NotEnoughItems, or NBTedit.
A lot.
You can this is how: go to youtube, search for how to make your own wizard101 custom card. The video will show you from there
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.
bye it
You can make your own custom labels with software from Avery. When you buy Avery labels you can download the software and design a custom label for your business.
just google roswell fingerboards .com there you are click on custom and create away
It is possible and very easy to make your own custom cd labels. You can purchase a program that allows you to design them on your own computer and print them out at home or choose one of many online vendors for a more professional look.
A few companies offer custom decal designs that they will print. The companies Build a Sign and Decals Planet are two of them that make custom decals.
Here is the website that I found for create your own rims : http://www.ehow.com/how_7587926_create-custom-car-rims.html They will show you how to from start to end, so hopefully this will help you.
Try www.reasonablyclever.com. it has a place where you can make your own person and then buy them