Amazon has EchoPlan 150PCS Magnetic Blocks on sale for $35.99.

About this item:

This set includes 150 magnetic blocks designed for constructing various shapes and structures. The blocks are made of magnetic materials and feature a 1-inch large size, suitable for developing spatial reasoning and problem-solving skills. These magnetic building blocks are intended for children aged 3 to 10 and can be used for STEM activities, sensory play, and creative building. They are ideal as gifts for Christmas or birthdays, promoting imaginative play and hand-eye coordination.