Here are a couple of many ideas that might inspire you!
The first thing to do is to think.
I happened to have this giant silver plastic Christmas ornament on a stand, A glass one should work as well, just might be more difficult to attach. I also had this cast iron lantern that held a candle but there are lot's of other ways and ideas.
This picture shows the diffuser from the solar garden light in the globe.
Step 2: Assemble
Step 3: ...enjoy the glow
The solar panel assemble on top looks a bit funky in the daytime, I might work on making the solar panel attached somewhere remote with wires to the LED in the globe.
If you already have low voltage garden lighting, you could use that with either the standard incandescent bulb or I'd highly recommend using 12v LED's. You can get very bright automotive LEDs that would kick butt in these applications.
Step 4: Lantern - door and diffuser
I simply mounted the solar light to the side with the light diffuser poking through an existing opening in the lantern's door, holding it in place with a big rubber band. If you cannot locate a suitable color rubberband, try cutting a band from an old innertube.
Because the solar light is still a rather pinpoint spot, I slid a diffuser into the lantern. This one is thin white plastic sheet, but you could also rut a gallon milk carton or similar translucent plastic.