The Time Tomb settable table digital clock is a nice and luxury addition for any home or office work table. The model allows you to change displayed time and its appearance right within Blender without getting out to prepare new textures and stuff.
How to set time:
Navigate to Clock -> ClockBackPlane; each of five objects there represents one number or a delimiter sign and has corresponding material; after choosing a digit that you want to change, in Node Editor in Image Texture pick a file with proper name. There are numbers 0..9, OFF state (to turn this digit completely off) and a delimiter sign. You can also adjust color or intensity of lighting for each digit separately. I believe this is the best kind of automation and time-saving for a digital clock, that you could get in stock Blender without extra add-ons.
Dimensions: 24 x 24 cm, height 16 cm
Case: procedural PBR Blue Marble, all UVs unwrapped to prevent stretching.
Epitaph lettering: procedural PBR Gold with real world color value (source: PBR Rendering Encyclopedia).
Numbers & Delimiter: simple Emission shader, thus you can change color/intensity of lighting per single number the way you like. Youre also free to post-process to add glow, flares etc.
Texture resolutions: 1024x1024 for signs & numbers, 2048x2048 for the epitaph lettering. All textures put into separate archive in Supporting Items.
All imagery is done via Cycles / Filmic (Base Contrast profile), no post-processing.