Shattered wedding glass to...?

How about gathering the pieces in a shadow box (glue it in the rough shape of the original glass shape) and then find a nice "blurb" . My first thought is "marriage is a sum of pieces that need to work together" kind of corny and I am sure you can do better

You could stain/paint the glass pieces and create a mosaic piece to give to them as well, I like the idea above of adding a nice saying to go with the pieces being formed together as one.

Great idea! You can start a new trend . . .

It would be great to form the pieces into a mosaic heart & put the phrase on the side of the heart!

There is a tradition at Jewish engagements for the MILs to break a plate together - we used the shards from that plate from a good friend's engagement to make a frame (mosaic style) and that would work for the glass that you break under the chuppah as well. My husband and I put some of our glass into the mezzuzah at our front door. You can't see it, but it's nice that we know it's there :)

If the couple did not also do two colors poured in a bottle at the ceremony, then you could further crush the glass and make the sand bottle yourself. I've seen the groom pour his sand (1/2 cup or so) into the bottle first, with the officiant explaining the symbolism of blend the two sands. Then the bride adds her sand. More often, I've seen the couple pour pink and blue sand at the same time, truly blending the sand which can never be separate again. You could add the glass at any point, then seal the bottle with its lid and sealing wax. More simply, you could pour the glass in a small bottle and add water, olive oil, or wine, and seal and decorate the bottle. It's sounds like a meaningful gift to me to use the the wedding glass. Best wishes 😇 .

Depending on what your budget is and where you are located, there are a lot of options for repurposing the glass. For my friend's brother's wedding, the glass was gathered along with a napkin from the hall and a few other chatchkes and put into a shadow box.

There is another custom to have something on the wall that identifies where the east wall is (the idea being that Jerusalem lies to the east and we should turn our attention that direction)-- in Hebrew, the word used is Mizrach. I have seen beautiful Mizrach mosaics made from the broken glass. It's a great way to kill two birds with one stone, so to speak.

If you wanted to go a less DIY route, you could always have the glass shards re-blown into a new glass or vase or something. This is especially fun when you use a colored glass.