Minimalist Monochrome Package Design for Sponge

I'm looking for a simple, minimalist design for a PVC zipper poly bag that will hold a sponge. The color scheme should be strictly monochrome, without any vibrant or pastel colors. The design should be clean and uncluttered, in line with minimalist aesthetics. Size of poly bag is 17 cm x 13 cm

Ideal Skills and Experience:
- Proficiency in graphic design software such as Adobe Illustrator or Photoshop
- Strong understanding of minimalist design principles
- Experience in package design
- Able to work within a monochrome color scheme
- Creative thinking to design a simple yet appealing package for a sponge