Have you never tried a wand? For powerful external stimulation, this may be the toy for you.  With their large motors — and typically wide, bulbous heads — wands can cover a lot of territory, but also tend to vibrate at lower frequencies than many other toys, producing rumbly (or resonant) vibes as opposed to buzzy ones.

Check out these hottest wand massagers on the market right now, all conveniently shoppable from the privacy of your bedroom, where you'll more than likely be using them a fair amount of the time.