Gemmicc vs. $18.98 Slickdeals Magnetic Tile Sets

September 9, 2026 — A new discount on 42-piece magnetic tile sets has hit the market for $18.98, prompting questions about whether small budget kits offer better value than larger, high-magnetism sets. According to Slickdeals.net, the educational building block sets are currently priced for preschool and kindergarten learners with free shipping for Walmart+ members.

I’ve spent enough time testing these to know that a low entry price doesn't always mean a better deal. The Slickdeals.net listing features a 42-piece count, which is fine for a toddler's first exposure but usually leads to frustration when they try to build anything taller than a foot. If you're on a budget, that $18.98 price point is tempting for a birthday party gift, but for daily home use, it lacks the structural integrity needed for complex builds.

Between these two, I’d go with the Gemmicc 100-piece set from STEM Magnetic Tiles. While it costs more upfront, you're getting 98 tiles and two magnetic cars without the "filler" plastic blocks that some brands use to pad their piece counts. The Gemmicc sets use ultrasonic welding to secure the magnets, which is a non-negotiable safety feature for me. I’ve seen cheaper sets crack open, and loose magnets are a serious hazard.

Expert tip: When comparing sets, look at the magnet size rather than just the piece count. Larger magnets allow for "dream big, build bigger" projects because they can support the weight of 3D geometry. If your child is already building stable foundations or vertical towers, the stronger magnetism in Gemmicc tiles will prevent the structures from collapsing under their own weight.

Skip this if you already have a massive collection and just need a few extra squares to fill a bin. But if you want a set that grows with a child's fine motor skills and color recognition, the larger kit is the practical choice. Here’s what I’d actually buy: the Gemmicc 100-piece set. It provides enough variety for 2D planar shapes and 3D builds without needing an immediate upgrade.

Choosing the right building tools comes down to how much frustration you want to deal with during cleanup and construction. The ultrasonic welding and reinforced plastic make the Gemmicc tiles a better long-term investment for the playroom.

Shop STEM Magnetic Tiles