Personalizing a Glass Jar Lamp

We have a lamp in our living room with an empty glass jar base and initially I bought some rocks and fake plants from the Chelsea Flower district and made a quick little arrangement. I like it and it adds a little plant life to the room which I otherwise can't seem to have (due to our curious cat).

I've often had different ideas of items I would like to display in the base and finally took an afternoon to experiment. Pottery Barn of course has their professionally photographed inspirations as well. Regarding the lemons, they are real. I love the look but would want even more lemons in there and, for longevity purposes, fake ones would work better. This was just for the sake of the photo. I'm off to the kitchen now to make lemonade, lemon tarts, lemon chicken, lemon sorbet....

What would you display in the base?