Packing !

First - the Documents - Flight Tickets, the Hostel Bookings, the Train tickets (Granada to Barcelona), our IDs - other than our Passports.
Then the Essential Medicines - just in case ... & regular ones - with prescriptions.
Toiletries - the usual fancy stuff for the Ladies (which I dare not call un-essential) and my Shaving Kit.
Torches - rechargable ones; Cameras, chargers....mobile chargers ...My essential tool kit.
Clothes - not just summer clothings, since the temperatures in the evenings are presently around 12/14C. So a single light 'upper' should suffice. Undergarments in much larger numbers than clothings.
Footware - casual light and travel boots for me.
All this in my large Rucksack and another shoulder bag with rollers.
Handbaggage reduced to a minimum for all of us. Tanima uses a jumbo sized hand-bag and has in the past brought anything & everything we can ask for. Ticks will have her napsack with a couple of books, a set of clothings & socks, and her camera, a notebook as she is the account-keeper for the trip.
Mine will have the Documents, one set of clothings, a towel ..... I suppose thats all.
Now getting it all together and filling it using minimum possible space is what is interesting.