Yellow Tools in Hollow Knight: Silksong

Piton that allows one to hold in place on a wall.

Purchase from Jubilana in Songclave for 350 Rosaries.

Increases damage dealt by the needle, but also increases damage taken.

Pick up from the tunnels of Sinner's Road.

Shows Hornet's location on the map.

Purchase from Shakra for 70 Rosaries.

Allows you to retain some rosaries upon death.

Pick up from a corpse in a guarded room in the northeast of Wormways.

Automatically collect nearby Rosaries.

Purchase from Pebb in Bone Bottom for 120 Rosaries.

Has a small chance to negate an instance of damage.

Obtained from Lumble the Lucky in Blasted Steps.

Shoots Rosaries.

Inside the Rosary Storage in High Halls, requires a Simple Key.

Enables backwards dodge.

Purchase from Twelfth Architect in the Underworks for 140 Rosaries.

Enemies drop more Shell Shards.

Pick up from a small room in the center of The Marrow.

Consumes Silk to increase your speed.

Far Fields, in the far southeast room of the entire map. Requires Needolin and Swift Step.

Expands and strengthens the effects of the Needolin.

Purchase from Jubilana in Songclave for 320 Rosaries.

Enemies drop more Rosaries, but you lose some when taking damage.

Purchase from Grindle in Blasted Steps for 350 Rosaries.

Weighs you down, reducing knockback from enemy attacks and recoil from your own.

Purchase from Mort in Pigrim's Rest for 160 Rosaries.