Get a girlfriend who likes to see you come and make you do it. I had one who couldn't keep her hands off it. As soon as she got in the car she had it out playing with it and she delighted in trying to see how many times she could make me come in an afternoon. I asked her why she liked it so much and she said it made her feel powerful. Well I guess she was right because she owned me for over a year.
Now for DIY stuff I like the feel of rubbing alcohol. I have a foreskin and I pull it back tight to wash it off using rubbing alcohol on a cotton ball. The feeling of the alcohol is cold as it goes on, then hot, then it tingles as it dries. After it is dry I can slide my dry fingers over it to masturbate while holding the skin back tight. The stretching of the tightly held inner side of the foreskin feels great too. Another variation I have found is to hold my glans between my fingers and pull it outward so I can caress the exposed inner foreskin only. Of course you can only slide down toward your belly when you do that but the stretching it provides is unique and it's a different feeling when you come. Rubbing the bare dry glans feels good too for just playing around. Another pleasure if you have someone to do it to you is this. The tip of my glans becomes unbearable to touch as I come so I have to leave it alone when doing it myself. If my wife holds me down so I can't stop her and she massages that tip all the way through the unbearable while am forced to endure it that feels great but my legs can't stop shaking for a while afterward.