Use things like this:

• Pop tab
• Orange marble
• Clear marble
• Beads, various colors
• Hex nuts
• Pompom balls, various colors
• Google eyes, various colors and sizes
• Toy monkey
• Toy Dinosaur
• Gold snowflake
• Purple eraser
• Plastic spider
• Jingle bells
• Shells
• Buttons
• Penny
• Dime
• Nickel
• Pieces of pipe cleaner
• Pieces of straws

Click HERE for the how to. These make awesome travel companions!