I'm sure you could, as long as you concentrate and have the right intent. There are also lots of crystals and such that help promote meditation and astral travel, as well as help you focus.
Stones to help
Clear quartz this is one stone I count as a medicine stone. It helps amplify other stones as well.
Common Opal is good or any opal. if you decide to try astral projection while Laying down you can attempt putting certain stones over your chakras.
Sodalite is also good if you have issue with trying to relax to get your self to project.
Do not try to astral project if you are tense or nervous or exhausted. if you are this does not mean you cannot astral but it takes up more energy usually