Travel journal ideas (from Writing Away by Lavinia Spalding):
write out your itinerary
do columns each with date/destination/discovery
list adjectives to describe the journal and journey
first impressions
explain surroundings as if it's for the first time
to make blank spaces, trace things and leave open for your words
take a scavenger hunt, look for "trash"
cut up a map and add to journal
notice something you normally wouldn't
write all the details
write the unexpected
best and worst list
write a poem
what seems "off" or "ugly"
harvest words from everywhere