When stocking your toy crane machine, selecting the right prize materials significantly impacts player success rates and engagement. The ideal prizes balance grabability, durability, and visual appeal. Soft, plush toys with textured surfaces consistently outperform hard plastic or metallic items because their slightly compressible nature allows the claw to maintain better grip during lifting. Materials with moderate density and low friction coefficients create optimal conditions for successful grabs, while overly smooth or heavy objects tend to slip from the claw's grasp. Medium-sized plush toys with minimal protruding parts offer the best results, as their uniform shape distributes weight evenly and presents a larger surface area for the claw to engage. Avoid prizes with slippery coatings, irregular shapes, or excessive weight, as these dramatically reduce grab success and frustrate players. The most effective crane machine setups feature prizes with slight surface texture, consistent density throughout, and enough flexibility to compress slightly when gripped. By carefully considering material properties when selecting your inventory, you create a win-win situation where players enjoy reasonable success rates while your machine maintains profitability through balanced difficulty.