Is there a way you can get a ps2 hard drive for a ps2 slim?

so recently, i dont like putting in memory cards in and stuff since they take to much space

and believe it or not but i have over 70+ 8mb memory cards.

i dont like keeping them stored and having to put a nametag on them to findout which one is for which game.

is there anyway i can put a hard drive into my ps2?

i dont care if its inside or outside of the ps2, i just need a hard drive.