This one is long and narrow but I like the planters ideas, and having the lighting embedded in the decking. Wouldn't use the pebbles, etc. at the end.
The easiest way to add some Boho glam to your garden is with lighting. String fairy lights over a a comfy seating area, line pathways and divide areas with lanterns, and add some solar lights to your fence for when you get the barbecue out!