Here's some of the cakes I've made before. They're all here if you want to see bigger pics. There are others there but these were some of the ones I was happiest with. I also need to do some editing as some of the pics are a little dark... but anyhoo :)
I really have fun making them so it's as much a hobby as anything else I suppose, and I LOVE seeing the kid's faces... I remember when my Mum made our Birthday cakes and it was SUCH an awesome feeling to know it was made just for you on your birthday - and just as much fun guessing which one from the book (I think Mum had the Women's Weekly Birthday Cakes book) it might be!
Full details on how/what I use are here. It's like play-dough for adults *wink* I've also updated posts so that you can click on the 'cakes' link thingy in the index on the right hand side (scroll down) as there's a few other cakes there that I haven't added to the main cake page.