Help?!

Okay so I have a question I've been wanting to ask for years but I'm a timid person so I haven't. Anyways, I really want a dildo or like a vibrator or something. I've recently lost my virginity to my boyfriend but of course he's not always around. I don't want to buy one and my parents see what it is. They don't open my mail or anything but I'm paranoid they'll just know. I know I'm crazy but still any suggestions?