I want lights like this! DIY Outdoor fire pit with sweet ambiance effect! This guy uses limestone for the walkway and seating area. I think for my house I would use pavers. Pavers would be more work though.
Magnolia 'Little Gem'-easily controlled to te height range that suits your requirements ben. Will generally form a clipped block of foliage over time though not as dense as the lilly pilly we chatted about. *Could be used as a "pleached" hedge(st