The neon is placed in between transparent sheets of polished acrylic with a heavy base that allows you to stand the unit on a table or shelf for display, this method also hides the power supply. 

Units are mounted directly to the front side of a lipped wooden panel. All wiring and power supplies are hidden behind the piece, leaving the power cord as the only exposed electrical component. 

A frame made up of clear glass tubing is bent to mimic the shape of the existing unit (or bent as a simple rectangle around it) and is attached to the piece using clear support bars and silicone. This is for when you'd like your neon to be hanging instead of directly attached to a surface. The frame allows you to suspend the unit from thin wire which can then be attached to a ceiling, pegs or screws in a wall, or from the top of a window frame, etc. 

This involves the same mechanics of a dead frame, except this frame (seen in blue) is a part of the original design.

In this method the neon units are mounted to a sheet of polished acrylic which can then be hung from a wall. Colored or opaque acrylics such as black are used to visually frame the neon, (similar to the mat board in a picture frame) and to capture the reflection of the neon placed on top of it, creating even more of a glow. With opaque acrylic you also have the benefit of hiding the electrical components as all wires and power supplies can be hidden behind the plastic. Clear acrylic can also be used to group multiple neon units into one piece. This backing appears virtually invisible, and this method allows for easier movement of a piece as opposed to detaching separate units that have been mounted directly to a wall.

The neon in this image is mounted directly to the wall (it can be drywall, brick, concrete, etc). To do this, tube supports that hold onto the glass units are first drilled into the wall's surface and then the neon is placed into the supports and wired in. 

With outdoor signs we can create neon that is mounted to a metal housing which is then suspended from the side of a building. For a sign like this you will need to keep a few things in mind: it can't extend from the building beyond 18 inches, it has to be housed in a metal frame, and an illuminated sign permit is required. 

This style of mounting is very similar to using colored acrylic, it creates an extra glow but with an even sharper reflection of your neon units. The attachment of the neon to the mirror is also an aesthetic bonus as you use glass rods that bring a slick feel to the entire piece.