Not needed every time - but for something a little different, try tying cock and balls. The stimulation is great, and the orgasm is amazing.
I like to use a length of nylon parachute cord about 6 feet long, 1/4 inch diameter. First wrap it around right at the base of your penis and around the base of your scrotum as high up to your abdomen as you can get. Keave about 2 inches free for a knot later on. Get it snug but not too tight. Take 2-3 wraps. Your cock and balls will be brought forward.
Wrap around the base of your scrotum 4-5 times, pulling your balls down below your straining cock. You'll feel a very pleasant aching sensation deep inside. Wrap another turn or two if you can stand it.
Now bring the free end of the line up around your cock. It's better if your cock isn't fully erect, but it works well either way. Wrap the line around the very base of your cock, which will now be almost fully erect - wrap as close to your abdomen as you can get. Wrap snugly, but be careful not to wrap so tight that it interferes with the flow of cum.
Keep wrapping around the base of your erect cock, each turn closer to your abdomen than the one before it. Your cock will be fully erect, probably longer than you've ever seen it before. It will be straight out, or pointing upward.
Look at what you've done. Stroke very gently, so you don't cum too quickly. Use only one finger and your thumb at first.
You can keep yourself erect this way for a very long time. When you're ready, allow yourself to use a ring of thumb and index finger around your cock. Stroke gently, stop when you get too close to cumming. Finally, when you just can't stand it any longer, allow yourself the full hand stroke from base to tip and let the cum shoot out onto the rug, the table, somewhere you can see what you've done. Count the number of spurts - three - four - six -seven? The longer you can hold off cumming, the more intense the orgasm and the more spurts you will have.