I don’t quite understand it. If I get hungry, I eat and it goes away… No struggle at all, real hunger means I need to eat 
I don’t know how anyone can get bored unless they are standing in a row with a headache so they can’t even think but you surely can do something else. If you want to consume something but you don’t need food (and the temptation to eat isn’t great)… Well, coffee or tea works for me (duct tape never would :D). But if it must be food, eat food just careful what and how much if possible.
Of course, it may be simple for me as I don’t have your problems and your everything. I have other problems regarding food and maybe you would consider them trivial…
But wait. I actually was very serious about doing EF a handful of times in my life and it’s not actually fear but I felt I need to make sure I WON’T get hungry (except for my 120 hours where my determination and curiosity was huge)… I always have a strong day before it, satiating and high calorie. It almost always do the trick together with my determination. But nothing happens if I still eat, actually. And I realized I shouldn’t do this in a way that I feel stuffed after my last meal. Effective for me but not nice.
18-24 hour is short, what’s the problem there? But if you aren’t ready for such an IF, wait, you may arrive to that eventually… I would let things happen. Sometimes my fast is unusually short, sometimes it’s longer than usual, it’s quite natural, I think.