Need Macintosh SE Keyboard, Mouse, and powercable

Ok, i just found an old Macintosh SE in my basement, i guess my dad got in a while ago. Anyways, its mine now, and all i have is the computer, no cables, no mouse or keyboard
So i guess i need a Keyboard with cable for my macintosh SE thats working, and i need a mouse with cable, and a powercable, all for the macinstosh SE, and all need to be working.
thanks
and, if it makes a difference, i'd like to pay with a money order, but i MIGHT be able to do paypal