I've got too many glass jars already . I wonder about grouping them together in a shallow box as a portable miniaturised garden.
Instead of planting horizontally, plant vertically! Use a wood trellis, tin cans, and IKEA pot hangers to recreate this look. - 20 Ways to Make the Most Out Of a Tiny Backyard -Small Backyard Decorating Ideas
Tin can herb garden. Small enough for kitchen windowsill, definitely basil, parsley, cilantro.( would love to have my own little herb gardening area )