The Meaning of Life, the Universe, and Everything.
Upplands Väsby, Sweden
I found a neat thing while gathering music discs in my survival world. It is especially useful if you don't build any mob grinders.
With Aqua Affinity, Depth Strider III and Respiration III on your armor, lure a creeper and a skeleton into a deep enough river, lake or ocean. Now swim along the bottom! As you may know, to get discs you need a skeleton to kill a creeper, so keep the creeper in front of the skeleton as best you can.
The advantages of this method
Additional spawns cannot sneak up on you, they all stay at the surface. You are a stealthy submarine!
It is much easier than on land to get the skeleton to shoot creepers while avoiding them getting near you. The creepers swim sluggishly in the water, and also don't move as much as much when shot. When you get the creeper aligned well, the skeleton might hit it three times in a row.
Should a creeper explode, you don't ruin the landscape
Keep moving until you find a the position where the skeleton hits the creeper, then stay there!
I found a river with depth around 8 to work great
Closer to the skeleton is better. The further away you are, the more limited are the directions you can strafe safely in. You can get the creeper and the skeleton to be almost on top of each other, with you underneath them
Get an armored skeleton as your sniper. Then you don't need to worry about losing it to the sun and can continue luring creepers into the water after daybreak.
I actually lure a skeleton into a piston trap first, dart in and build a shelter around him so he's completely enclosed. Name him so he doesn't despawn. Then you can build another piston trap nearby to trap creepers. Run over and quick mine the block of the building so that the skelly can see/shoot the creeper. Run around behind the creeper so the skelly starts shooting at you but hitting the trapped creeper. As soon as the creeper is dead, collect the record. I've filled multiple chests this way. Try to take your time and find a skelly with an enchanted bow in the first place so they can kill the creepers faster.
I just build 4 pistons surrounding a pressure plate and lure a creeper onto it and then the pistons raise up and trap the creeper and then its very easy to have a skeleton kill it.
This is a cool idea! I tried it, but the first time, I couldn't get the creeper into the trap, and had to give up, being swarmed by mobs. The second time it was only me and the creeper. I got it into the trap, but it blew up! It seems to take more skill than I thought!
On the other hand, while swimming I got 7 discs during one night. Now I only have Mall missing.
A nice thing in the water is that you can snipe off zombies and spiders before you lure down the
creepers and skeleton. On land, I easily get overwhelmed, at least on hard difficulty
Nice idea about the water. I built a trap as others did with a trapped skeleton at one end of a row of surface trapdoors into which I drop the creepers. They I go to the other end and show myself and the skeleton does the rest. I often wonder how long the skeleton's bow will last assuming it wears down like a players does ...