Tear Bubble Shield
Chargeable Tear Shield
Tear Bubble Shield is a custom passive item which makes Isaac's tears build up into a bubble around him for as long as attack is held down, by releasing the attack buttons the bubble is shot forwards.

If an enemy collides with the bubble while you are charging it they will take damage and the bubble will decrease in size, if the bubble is big enough it can protect you from enemy collision.
(lost contact makes powerful synergy)
Tear Bubble Shield has synergies with several tears/projectile types/effects.
It even has synergy with the "Trail of Tears" mod (which I recommend), though to make it work you have to go into trail of tears metadata file and rename it, due to the way mods are loaded alphabetically (I renamed it 'A Trail of Tears')
Tear Bubble Shield comes with 1 challenge mission, Wrecking Ball, in this mission your bubble is constantly growing but is never fired, you'll have some protection, but you must engage enemies in close quarters.
(or find familiars)
Steam Workshop

If an enemy collides with the bubble while you are charging it they will take damage and the bubble will decrease in size, if the bubble is big enough it can protect you from enemy collision.
(lost contact makes powerful synergy)
Tear Bubble Shield has synergies with several tears/projectile types/effects.
It even has synergy with the "Trail of Tears" mod (which I recommend), though to make it work you have to go into trail of tears metadata file and rename it, due to the way mods are loaded alphabetically (I renamed it 'A Trail of Tears')
Tear Bubble Shield comes with 1 challenge mission, Wrecking Ball, in this mission your bubble is constantly growing but is never fired, you'll have some protection, but you must engage enemies in close quarters.
(or find familiars)
Steam Workshop
(although it's lowered a bit if you get soy milk, just so that way it doesn't get to full size too quickly)
Way to get around that would be either, as you said, rename the folder, or you could also try editing (or deleting) the metadata files.
But to be serious putting a link to the steam workshop version is not a bad idea, thanks for making me think of it.