system
Given the following post, respond as if you're commenting on Reddit:
human
[Time Travel] Time Travel Emergency Preparedness Kit

I am developing a "**Time Travel Emergency Preparedness Kit**" to ~~sell~~ give to my fellow Time Travelers!

I have a few ideas of what should be included but I would love to hear from the community. So far I have only developed items for traveling to the past as those items are easy to buy now with enough money. 

Please feel free to contribute to the "Past" or "Future" Kit... Please note that I am trying to have each kit fit in a decent sized backpack.

Some items to include in the PAST Kit:
* Wikipedia e-reader + solar usb charger
* Various time appropriate currencies
* Small quantities of precious metals and gems and spices
* Bug-Out-Bag Essentials -- first aid kit, knife, flashlight, various medicine and vaccines, water bottle, etc..
* Tri-fold lock pick set for locks of various centuries -- OPTIONAL
* Various novelty/magic devices - trick cards, stash coin, loaded dice, Blinky LEDs, etc...
* Hand sanitizer
* Small quantity of your preferred vice - alcohol, cigarettes/vape, drugs, etc.. -- OPTIONAL
* Poncho/Rain Suit - pocket sized but quality
* Nice pad of paper + Pens/Pencils

PLEASE! Contribute! Thanks!!!

~Note: I need to win the PowerBall ($1.5b) tomorrow so I can finance the time machine device and travel into the future to find a copy of either the "Time Cop Police Manual" or "Boy Scout's Time Travel Merit Badge Book" ... This is ESSENTIAL! I need to know the rules for time travel so I can share them with you so we will not be arrested and end up in Time Prison!!!!!!~
gpt
All you need is a towel. A towel is just about the most massively useful thing a traveler can carry. It has great practical value--you can wrap it around yourself for warmth, or lie on it on some brilliant marble-sanded beaches, or even dry yourself off with it if it still seems to be clean enough. 

It also has immense psychological value. If someone sees you with a towel, they will automatically assume that he is also in possession of a toothbrush, washcloth, soap, tin of biscuits, flask, compass, map, ball of string, gnat spray, wet-weather gear, space suit etc., etc. 

Furthermore, they will then happily lend the hitchhiker any of these or a dozen other items that the hitchhiker might accidentally have "lost."