To get the Nia's Toolkit, you must beat levels or rounds without losing. For every level or round you beat, you will earn free boosters to help you at the beginning of a new level.

The more levels you win in a row, the more boosters you will get at the start of the next level.

The rewards you will get after beating levels consecutively from Nia's Toolkit are:

Stage 1: 1 Rocket + 1 Propeller

Stage 2: 1 Rocket + 1 Propeller + 1 BOMB

Stage 3: 1 Rocket + 1 Propeller + 1 TNT + 1 Light Ball

When you reach the max level of Butler's Gift, as long as you don’t fail a level, you will continue to start new levels with 1 Rocket, 1 Propeller, 1 TNT, and 1 Light Ball.

When you fail a level, the Butler’s Gift will reset, and you will have to start upgrading the Butler’s Gift from scratch.