Hand-to-penis methods producing a variety of sensations.
Move that Leg
Lying on your side, spread apart your legs and push them up to your body, with one knee against the floor and the other in the air. Lubricate your hand and penis well, and hold your penis head in a fist. Now lie completely still, and with your fist stationary against the inside of your thigh, move the leg that's in the air from side to side. Your penis should slowly and gently slide in and out of your hand. The faster you move your leg the sooner you'll orgasm.
Now I Lay My Hand Down to Sleep
Starting on your hands and knees, lay your right forearm (if you're right-handed) down on floor and rest your head on it, and get an erection by using your left hand. If you do it right, by the time you become erect your right hand will fall asleep and lose its feeling. When you begin stroking yourself with your right hand, it'll feel almost like someone else is doing it for you. For safety reasons, don't do this for too long, and whatever you do don't use any artificial methods of cutting off the circulation to your hand.
Powder your Arm
While lying on your back, shake a good quantity of talcum powder or cornstarch on your erect penis and adjoining area. Then rub it with the underside of your forearm. You will find that the powder is a good lubricant in conjunction with this rubbing technique. During the session, turn over and hump your arm; then return to lying on your back. You can slow down the approach to orgasm by avoiding your glans (penis head) when you rub. Using your imagination will reveal many ways to fine-tune this technique for more variety.
Rim Job
When your penis is fully erect, lightly enclose the glans (head) and upper shaft in your hand. Lightly rub the upper surface of the glans, and the rim where it joins the shaft, with the ball and/or base of the thumb. Lightly tease teasing your scrotum, and anywhere else you want, with your other hand. Vary the pressure and speed of your rubbing according to your excitement level and preference.
It helps to be standing. Once your penis is erect, hold your hand over the glans with your palm facing down toward it. Spread your fingers and place the ridge between your thumb and forefinger lightly over the upper rim of the glans. Then just rub backwards and forwards over the rim and the top centimeter or so of the shaft. Vary the pressure according to what increases and maintains the pleasure. With the other hand, tickle and scratch your scrotum, lightly and tantalizingly, or anywhere else you want.
Rock Around the Clock
This is similar to the Belly Rub but more intense. Your penis may not be flexible enough for this one, so stop if it's uncomfortable. Kneel upright with your knees almost a foot apart. Now sit back on your feet so you're still in a semi-upright position, with your rear end resting on your heels about 6" above the floor. Get an erection and grasp your penis just below the head. Like with the Belly Rub, begin rubbing your head against your stomach below your navel area. But don't stop there – sweep the head as far as you can down your left leg, keeping it in contact with your body all the way. Now sweep it in the opposite direction, up toward your navel and then down as far as you can along your right leg. The entire motion is almost circular, as if your penis is a hand on a clock and the head is hitting all the numbers. Go slowly – and don't hesitate to linger rubbing your head wherever it feels really good.
Roll With It
Place your hands on the sides of your penis, and roll your penis between them quickly – kind of like the motion of washing your hands. This doesn't require lubrication.
Spittin' Wrist
Spit on your wrist, and then rub your penis head with it while you stroke with the other hand.
Spring Cleaning
With one hand, pull down the skin of your penis as far as possible, so that it won't move. With your well-lubricated free hand, start "turning" its head (only pretend!) as if you were trying to turn a greasy bottle cap. Try different rhythms, directions, etc.
Squat & Get Ripped
Stand for a while with your knees bent and masturbate with a good amount of lube. When you begin to want more stimulation, squat down and get your muscles "ripped," as you hold your testicles with your other hand. You may even pull on them (you can lube them up as well). Move your hips, also, to get the feeling of thrusting or humping. When you are about to ejaculate, rub hard and fast as you squat – it's great. An option is to sit down and pretend you are having sex with a woman sitting down. This technique is open to many other variations.
Surf the Web
Use a backhand grip with dominant hand. With your other hand approaching vertically from above, place your thumb, index, and middle finger on one side of the base of your shaft and the rest of your fingers on the other. With the webbed-like skin in between your middle and ring finger pressing against the base of your shaft, move both hands along the shaft together. The webbing of skin produces an intercourse-like sensation.

