Any ideas on what would be only coastal to fill my glass lamps?

shells, pasta, marbles

Beach glass or glass marbles

And I collect pretty rocks, but that might make it too heavy.

Leave the sand and add a gnarled piece of driftwood. The search for the perfect piece would be half the fun!

rustoleum makes "sea glass" spray paint. Very pretty in many different colors. Jo Anns has a nice selection. You can spray paint the inside. Use the coupon for 40% off.

I would add some shells, star fish, maybe a miniature anchor, maybe even a tiny boat.

I think you could use a bundle of things or make a little planter inside, using very small plants, and some stones and also a fish bowl, or even a couple of tiny toys like cars ,just about any thing ,go for it be creative.

I have that same lamp, I live in Florida so mine is coastal, but you could look for a non coastal unusual frame and use a cherished photo. Photo below if I did it right

Hi anything dealing with ocean shells broken glass found along the beach sand dollars. I filled mine with potpourri. It's a great lamp. Let me know. I hope I've helped

If you have a Christmas

tree Shop near you, they sell all sorts of shells and starfish that you could put in them, if not probably a Michaels or other craft store.

Shells, starfish, sea glass would all look great in your lamp.

Beautiful piece of weathered driftwood. I'd add some rocks. Go to local rock store. You'd be amazed of the types and colors of the rocks from all over the world.

paint the rocks with glow in the dark paint. There are different colors. Even clear but still will glow with different shades. It's fun for night when everything else is dark. Even put droplets on wood. All over. Make stars ✨. Day to night wear, lol.

I need a lamp like yours. On a hunt. 😊

I also think small decorative rocks would look great -

https://www.amazon.com/Pounds-Small-Decorative-River-Stones/dp/B01GP04VQW/ref=sr_1_4?ie=UTF8&qid=1490975654&sr=8-4&keywords=decorative+small+rocks

I filled a lantern with blue sand and white sea salt. Then added a remote operated candle, star fish and sea shells. You could do the same with your lamp.

succulent plants but you would need to be able to water them from time to time.

unusual shaped drift wood or coastal grasses and their flowers

They make fake succulents, try Hobby Lobby!

Anything native to your area.

I have a similar lamp and I put sand and seashells and sea glass in mine. I also have a small pail that adds some color. I was just thinking about buying some baby flip flops to add to it. Have fun!

Driftwood, shells, sea glass and seagrass from the beach along with your sand would be very coastal

how about airplants; mini fairy garden; battery operated mini lights?

Sea shells would look great.