Hiking maps of Tribeč and Vtáčnik
GPS (with respective data)
Trekking poles (lightweight)
Spare batteries for the forehead lamp (!!!)
Waterproof cell phone case
Bicycle blinker (we recommend to clip on you bag's back at night)
Reserve clothes (especially socks)
Elastic bandage
Plaster (!!!)
At least 1.5 L water at start place
Cash
Insurance