1.Sawyer water filter(best filter on the planet).
$200.00 [link to www.amazon.com]

2.First aid kit.Since it is burning a hole in your pocket I went big. EMT case $575 [link to www.amazon.com]

Lots of things you can do with 2k.Good sleeping bags,New tires,silver,gold,long term storage food(inflation hedge),Classes(personal defense,weapons deployment,first aid ect..),books on skills you may need one day soon,Solar battery charger+inverter.

If you have no savings keep at least 50% for an emergency fund.