Because a LASER is such a diverse tool, the markets you’ll find one in are diverse as well
Here are the most common ones:

Ad Specialty: Many items are imprinted via laser for the advertising industry including pens and pen boxes, assorted desk items, key fobs, maglites, laser pointers, etc.

Apparel: leather (and like materials) hats, belts, watch bands, wallets, and other clothing items can be laser engraved for some unique effects.

Awards & Recognition: From trophy plates and plaques to high end corporate awards, lasers are very often used for the manufacturing of a wide range of awards.

Architectural models:  Architects often need models of proposed projects.  Lasers are often used for the precision cutting of parts for these models.  Similar applications include model airplanes and dollhouse furniture.

Collectibles:  For identification purposes, collectors often use lasers to personalize treasured items by imprinting on display cases, jewelry boxes, etc.

Crafts: Artisans and crafters often use lasers to cut and imprint on a wide range of products including Christmas ornaments, glassware, ceramics, and custom artwork.

Funeral:  Urns and other memorials for the deceased are often laser engraved with spiritual or otherwise meaningful quotations,  Additioanlly, such memorials are also popular for pets as well.

Furniture:  Many high end furniture items are enhanced with a laser. 

Gifts: A variety of gifts are manufactured and/or enhanced by Laser Beam.  Popular gift items include personalized stemware, frames, mirrors, cake pans, utensils, laser engraved invitations, and diplomas, jewelry and apparel.

Home Décor: A variety of products used to enhance the home use lasers in their manufacturing process including rubber art stamps, decorations, and stencils. Additionally, mirrors, lamps, frames, clocks, cutting boards, and cake pans are rountinely personalized using laser technology.

Incentive:  A variety of premium incentives and other giveaway promotions are personalized with a laser.

Industrial: There are a wide range of industrial applications including the engraving of labels, tags, and product with logos, date, batch, bar codes and federally mandated information, and the making of stencils, overlays, gaskets, and flexible circuitry.

Jewlery: Popular jewelry items including earrings, rings, bracelets, and necklaces are made with laser cuttable materials and/or enhanced with a laser.

Office Supplies:  Popular product ideas include: rubber stamps, notary seals, binders, nametags, name bars, and signage.

Photography:  Not only can photographs now be laser engraved with great detail on a variety of materials, the frames, matboard and glass can be laser etched for a wide range of unique effects.

Point of Purchase:  Many displays are laser cut and/or engraved because of the Speed and efficiency of a laser.

Scrapbooking:  Many materials used by the ever growing popular scrapbooking industry are cut with a laser.

Signage:  A variety of signs use lasers in their manufacturing process for the cutting of sign vinyl, acrylic, plastic, and wooden pieces. Additionally, engraving on a wide range of materials is used regularly in the making of signs.   ADA signage can also be produced with a laser.

Toys and Sporting Goods:  A variety of miniatures including models, puzzle pieces, and dollhouse furniture are laser cut. Additionally, game boards, balls, bats, hockey sticks, golf clubs yo-yos, and wooden items are often personalized or decorated with a laser.

Wildlife:  Fishing poles, canoe paddles, gun stocks, are a few of the items that can be enhanced via laser.  Additionally, wildlife prints sometimes have laser engraved signatures and/or declarations laser engraved on to the frame and/or glass.

Woodworking:  Woodworkers use lasers for a variety for purposes including cutting, profiling, inlay work and detailed engraving on product.

These are just a few of the opportunities out there for laser engravers, and with a little creativity and experimentation, many laser users find their own profitable niche markets for their laser engraving equipment.