Ooops, I see that I omitted a flashlight! If I only had $100 with no wiggle room I'd probably try to finesse things a bit to buy a flashlight. As much as I'd hate to do it I could probably ditch the Nalgene and buy a bottle of water for $1-$2 and reuse it. That would net enough savings to get a decent light, either an entry level Maglite or an Olight i3e EOS with battery. I'd rather reuse a Powerade Zero or water bottle than rely on a $1 flashlight!

Obviously this is a mockup of what I'd do for $100, not an encyclopedic list of everything I'd want! For an extra $1 I'd love to have some dollar store duct tape as it's actually been very useful IRL. Maybe shave a buck somewhere to make that happen if possible.