Having a variety of materials for your infants to explore will keep everyone from getting bored. You don't need to spend a ton of money to build an awesome collection of materials that you can mix and match. You'll also notice that many of these are kitchen materials, so you might even look out for them at the dollar store or the thrift store.

Here are some ideas to get started:

• silicone baking cupcake cups
• silicone or plastic muffin tins
• metal ramekins
• plastic eggs
• paper towel rolls
• different sizes of colanders
• bubble wrap
• scarves
• cooking utensils
• cardboard boxes
• crumpled up wrapping paper
• different textured balls
• stuffed animals
• toy cars