Every Thursday in the National Shrine of St. Jude Thaddeus Manila, students of various universities nearby go to Mass. After Mass, the priest comes out with his holy water and sprinkles it on the mass-goers. Students would then break out their notebooks, their pens, their pencils, their laptops, etc., and hold it up high so it would catch some holy water.
The students do this at least once in a semester during their exam periods, before defending their papers, etc., believing that when they use these now-blessed objects during review, exam, or thesis defense, they would have God's Grace (not necessarily have good luck) when they attempt to pass their academic requirements.
Take note that they are having the priest bless objects that are secular, that had been used for secular purposes, and that will be used for secular purposes.
Assuming that this method does bless their school stuff, are these categorically lower than the "normal" blessed sacramentals, such as chalices, priest vestments, and rosaries?
I am asking for the Church dogma/doctrine standpoint, please, if it applies. Thanks!