Creating a mosaic out of broken glass turns trash into art, much like compiling a rubber-band ball or throwing rotten fruit at the television. Reuse and rearrange with today's Groupon.

Choose from Two Options

• $55 for a glassblowing or lampworking class for one (a $110 value)
• $99 for a glassblowing or lampworking class for two (a $220 value)

Glassblowing students gather their molten media from a 2,100-degree furnace, using lungpower to morph glass globs into delicate solid and hollow structures with a selection of glass-blowing tools. In the lampworking class, students meld glass with a combination of torches and tools, bending and fusing sand particles into small sculptures, beads, and pendants.

The Crefeld Glass Studio

Like the quadruple-digit fire inside The Crefeld Glass Studio's furnace, instructor Josh Cole's enthusiasm for glassworking helps budding artists create things they could not have attempted on their own. Josh keeps his classes at four to eight students so that everyone gets both the full benefit of his master's of fine arts in glass from the Tyler School of Art at Temple University and a clear view of classmates as they work the furnace. Regular pop-ins from visiting artists imbue The Crefeld Glass Studio with a collaborative vibe, and an online gallery gives students a place to proudly show off the exquisitely rounded rims of their amber-streaked vases or the short-sightedness of their delicate glass sledgehammers.