Cakes are not high tech. They don't need to be. Eggs, sugar, flour, butter. That's all you need. No GPS. No batteries. No nothing.
On the other hand, if you can make a delicious cake which also happens to do something amazing when you use the right piece of technology then you might as well.
This is sort of incredible:
Incredible Birthday Cakes
Ghost Busters Cake(01 of11)
(credit:Flickr: poppet with a camera)
Little Pet Shop Cake(02 of11)
(credit:Flickr: Leszek.Leszczynski)
Power Ranger Cake(03 of11)
(credit:Flickr: soa2002)
High Heel Cake(04 of11)
(credit:Flickr: Dark Dwarf)
Popcorn Cake(05 of11)
(credit:Flickr: camnjeanacess)
French Poodle Cake(06 of11)
(credit:Flickr: shingleback)
Ladybug Cake(07 of11)
(credit:Flickr: prayitno)
Kit-Kat Cake(08 of11)
(credit:Flickr: DoremiGirl)
Farm Cake(09 of11)
(credit:Flickr: Samdogs)
Camping Cake(10 of11)
(credit:Flickr: woodleywonderworks)
Hamburger Cake(11 of11)
(credit:Flickr: akeg)