SozoKa

Get your chests/hoppers/... back by putting minecart and boat variants into a crafting grid to get all uncombined items! (ex: 1 minecart AND 1 chest)

Improves lead behaviour by enabling leashed entities to jump-block more easily and teleporting them to the player if the leash is about to break.

The “don't move mister horse” feature you're looking for.

Convert command blocks to clickable signs by waxing a sign that has command blocks (max 4) behind it.

Sit anywhere you want! Look down, double tap sneak and right click and you sit. As easy as that. Or you can just sit on stair/slab or via "/trigger sit". Work on vanilla servers, or any other setup.