Things necessary for the trail:

• waterproof shoes, comfortable both for riding and walking e.g. trekking boots
• for english style saddles - chaps
• head wear: western hat or riding helmet
• head lamp
• spear sweater
• towel
• sleeping bag - only for the horse trail to Izera Mountains (Czech Republic)

Also nice to have:

• slippers or sandals
• comfortable trousers or shorts
• penknife
• pocket flask :)

The EU-foreigners should also bring the european health insurance card