There is a mantra that can be recited when we have no choice but to step over books, holy objects, and so forth. This mantra is OM VAJRA VEGAMA AH KRAMA HUM. We can simply recite this once when we have to step over holy objects. Of course we should try to avoid doing this, but when it is unavoidable, we can recite this mantra.
Geshe Tenzin Tenphel. FPMT Masters Program Ornament of Clear Realization. unpublished transcript. May 23, 2008 teaching.