I get where the O.P. is coming from.
There are a lit of options out there, and as always, the right tool makes life easier.
My first choice is usually a pair of scissors. Traditional scissors are one option, but these by Engineer seem more suited to my sort of uses. The same tools are rebranded as “Vamplier”.
Sometimes you need something a little heavier. These snips ride around in my road box, and get used on everything from packets to rubber strip etc.
Sometimes, you have to do tasks that you wouldn’t want to put a decent quality knife even close to. Cutting sandpaper is one such task, and buying it by the roll I seem to need to do it it often.
These old tin snips have little value in them, but the steel is obviously quite decent as they have done this task for some years. I have two pairs of these. One pair is 1944 dated.
Sometimes you do need a knife, but the right one.
I use scalpels a lot, but regular ones are often a little too fragile for my uses. I find these “Major” scalpels to be excellent.
But for something more regular sized, these Swann Morton “Cygnetic” scalpels are a superb design. You can change blades more easily than any other, yet the blade is held perfectly rigidly.

