How do I?

Not sure quite what your candle holders look like, a picture would be helpful so we can offer the best suggestions. Here are several ideas maybe you can draw from for usages with what you have.

https://www.pinterest.com/pin/559079741225221131/?d=t&mt=login

You might be able to fit solar lights in them and put them in your gardens.

Can you share a photo? That will help with ideas for you. :)

Hello. Could you consider posting a photograph? I am not sure if your candleholders are for tapers or pillars. Not knowing this it’s hard to give you an appropriate answer. Sometimes candleholders and flameless LED candles do look nice in fireplaces.

A photo would give us a better idea of what you have to work with.

Can you share a photo of them?

Another thought is that you could sell them as a set on Etsy or Facebook marketplace. Brides are always looking for decor items that have only been used once from one wedding that they could get for half price.

Maura is correct. Wedding decor is snapped up on FB marketplace. My daughters sold their decor (they were married a few months apart) that we DIY'd and took a vacation together with the proceeds!

You could also use a few if you have a fireplace. Put them inside the box and light for effects.

My first thought is a dining table centerpiece. You could decorate them for the holidays and then give them as presents.

Install some small LED lights in them and use them for patio lights

Maybe glue them together and make a dining table centerpiece.

Maybe put little flower stems in them