When traveling for work, bringing a laptop is often necessary. If you must use a laptop on the plane, consider using a lightweight foldable laptop riser. This will prevent laptop hunch.
If you are using the laptop in your hotel, using the laptop riser plus a wireless keyboard and mouse is a good idea.
When sitting in a hotel using a laptop, the desk may be too high for you. If it is, raise your chair so that your elbows are .5″-1″ above the worksurface. If your feet don’t touch the ground try to find something to put under them.
If you need to travel with a projector to hook up to your laptop, a mini projector is much lighter than the standard ones and takes up less space. 3M makes a good mini projector which only weighs 1 pound.