I use a pointer in which I see the world as only ever 5% of my experience at any given moment: 95% inner, 5% outer. Of course the numbers don't really mean anything as such, but I find that they help to keep some attention within, and to keep the world of form in context. Always feeling and being in connection with the inner aliveness.
Being aware of your breath can also work wonders, as well as other things that direct attention into the body.
It takes time, but I've noticed a gradual increase in my ability to stay present throughout the day after I started using the 95/5 pointer. There is an almost continuous sense of alive energy now that I feel in my chest and abdomen -- it fluctuates, but as soon as I notice it it's almost like turning up a dimmer switch.