The first videogame console I purchased with my own money. Saving for months to get enough for it and Super Mario 64 DS, putting all my money little by little inside a Yu-Gi-Oh! Starter Joey Deck Box (The green large one with the handle, I still have it)...
The day it released I was so sad since I was short the tax money, I was 13 years old and somehow forgot about it, since in mexico tax is already included in most purchased, but in the USA where I bought it that is not the case. My Dad paid the tax for me but he was sure to let me know that he expected me to pay him back, I wouldn't have it any other way and I did just a few weeks later.
So many fond memories of the DS Phat. It got a heavy hit and one of his hinges broke, but I still played trough it religiously. Mario & Luigi Partners in Time, Kirby Super Star Ultra, TWEWY, Pokemon Pearl and Platinum,NSMB, Mario Kart DS, Fire Emblem Shadow Dragon, and so on. The top screen ultimately died due to the broken hinge, but still used the screen below to play Pokemon Ruby.
I ended up replacing it with a DS Lite, but I still tried to fix it by myself. I opened and checked it, I had no idea what I was doing but I had fun exploring the insides of the console. I still have it over my game collection, hastily put together and in a sealed box. Maybe I'll try to repair it again, this time with the actual parts needed...
Happy Birthday DS, may your years never end.