Just wondering if it's any good:  https://stacksocial.com/sales/uo-smart-beam-laser-accessory-set

I do presentations in schools, which of course have projectors, but I often struggle with connecting them up with my pc/phone/ipad, or leads not being long enough, and of course some rooms have no projectors.  What I want to be able to do is take in my own mini projector, not have to worry about leads, connect my phone or ipad and give a half hour presentation.  Doesn't need to be movie quality.  I'm wondering if this is a good option.