i guess it's not exactly "new", but its new to me. this post is long but hear me out.
if you're not familiar with "sounding", that is when you put objects inside of your dick hole (urethra is the technical term). i've tried this before with solid objects like thin paintbrush handles, but for some reason anything really solid hurts. here is my solution. i had to find something solid, but flexible and soft. so i went to the store and found this fish bait worm, which is just a plain piece of rubber. using a piece of fish bait sounds weird, but it is ergonomically perfect, and a pack of two of them is only a dollar. the bump and the large part are too large, so i cut those off and the rest is the perfect size, it could be longer but this is fine as is. its just large enough to occupy the empty space and stimulate the inside of my dick, but not too big, which would hurt.
for anyone who hasn't tried something like this, i urge you to give it a shot. you just put lube on it, put it inside of your penis, work it down into the middle so it doesn't just fall out, and leave it there while you masturbate. when you cum, it gets forced out by your semen while you have an orgasm. i swear, it feels absolutely amazing. it has added an entire new dimension to jerking off because the inside of your dick is being stimulated too, and its like you feel the orgasm through the entire length of your penis instead of just at the head.