Silicone plugs are one of the best options for your gauge due to their lightweight. Besides, silicone doesn't have any kind of harmful substances to your body, such as nickel. That's why it's perfect for those who suffer from allergies. 

You can choose from eight different colors, which are:

• Black
• White
• Lilac
• Green
• Red
• Blue
• Pink
• Peach

And they're available in the following gauge sizes:

• 8g (3 mm)
• 6g (4 mm)
• 4g (5 mm)
• 2g (6 mm)
• 0g (8 mm)
• 00g (10 mm)
• 1/2" (12 mm)
• 9/16" (14 mm)
• 5/8" (16 mm)
• 11/16" (18 mm)
• 7/8" (22 mm)
• 1 inch (25 mm)
• 1-1/8" (28 mm)
• 1-1/4" (32 mm)
• 1-3/8" (34 mm)
• 1-1/2" (38 mm)
• 1-5/8" (42 mm)
• 1-3/4" (44 mm)
• 1-7/8" (48 mm)
• 2 inches (50 mm)

Bear in mind that silicone tends to attract dust, but it's easy to clean.