Minitweaks is an extension for Carpet Mod with many small, mostly survival-related features and game mechanic changes

Carpet Rules

The list of carpet rules can be found on Github, or in-game with /carpet list minitweaks
By default, every rule is disabled, but can be enabled with /carpet <rule name> <value>

Full list of rules (1.5.6):

allChargedCreeperHeadsDrop: All mobs killed by a charged creeper drop their head instead of only one
commandSeed: Permission level required to use /seed
deathItemsDespawnMinutes: How many minutes it takes for a player's items to despawn after death
disableBlazeFire: Disables fire made from blaze fireballs
disableGhastFire: Disables fire made from ghast fireballs
dispensersBucketMobs: Dispensers can pick up bucketable mobs
dispensersCureVillagers: Dispensers feed golden apples to zombie villagers with weakness
dispensersDuplicateAllays: Dispensers duplicate dancing allays with amethyst shards
dispensersDyeMobs: Dispensers can dye sheep (and shulkers if dyeableShulkers is enabled)
dispensersNameMobs: Dispensers use name tags on mobs
dispensersRepairGolems: Dispensers can repair Iron Golems with iron ingots
dragonBlockDamage: Set dragon block damage breaking type, regardless of mobGriefing gamerule
dyeableShearedSheep: Sheared sheep can be dyed
dyeableShulkers: Shulkers can be dyed. Color can be reset to default using a water bottle
echoShardsEnableShriekers: Using an echo shard on a sculk shrieker allows it to summon wardens
fasterOxidation: Blocks oxidize much faster when touching water
lightningGlowifiesSquids: Squids struck by lightning convert to glow squids* maxPlayerXpDrop: Maximum amount of xp players drop on death
mobItemPickup: Overwrites random default pickup chance when mob spawns. (Only zombie and skeleton type mobs are affected)
mobsDropNametag: Named mobs drop their name tag on death
moveableWaterloggedBlocks: Waterlogged blocks stay waterlogged when moved with a piston
noCreeperBlockBreaking: Disables creeper explosion block breaking
noFeatherFallingTrample: Prevents farmland from being trampled if you have feather falling
noGhastBlockBreaking: Disables ghast fireball explosion block breaking
noSnowGolemMelting: Prevents Snow Golems from melting in hot biomes
noVillagerWitchConversion: Villagers don't convert to witches when struck by lightning
phantomSpawningTime: Amount of ticks before Phantoms start having a chance to spawn
quickHarvesting: Right click crops with a hoe to harvest and replant* removableCurses: Curses are also removed when using grindstones or repair crafting
renewableDragonEgg: Dragon eggs will always be placed on the portal after defeating the dragon
renewableRawOres: An anvil landing on Iron/Gold/Copper blocks turns them into the raw ore block version
shaveSnowLayers: Snow layers can be shaved, removing one layer, when right clicked with a shovel
slimeLooting: Bigger slimes spawn more smaller slimes when killed with looting. Additional slimes can be up to as many levels of looting as you have (up to +3 with looting 3, etc)
vexesNerf: Vexes will start to die after the evoker that summoned them dies
villagersAlwaysConvert: Villagers will always convert to Zombie Villagers when killed by a zombie, even on easy and normal difficulty
villagersExplodeBeds: Villagers cause explosions when trying to use beds in the nether or end, like players