OT : 30 G of kids play sand 'silica'

[plankton]

I took down the kids jungle gym outside in the backyard which included a sand pit and was able to fill one 30G garbage container with the play sand; which is just silica sand I think.

Is there any practicle use for 30G of play sand? Fluidized reactor for my 60G nano? Use it to resettle some paving stones that have sunk? Any ideas? Thanks.

Scott