I buy what I see and like and below are some of the things I bought when I travel. Postcards and magnets are a must; these two things are top on my list as I collect them religiously.
Other keepsakes that I collected include train tickets, boarding pass, brochures, maps, leftover foreign notes/coins, stamps, receipts and many more! Yes, quite a hoarder but I might want to use them all one day and create my scrapbook or at least scan some of them and use it as decoration in my yet-to-be-created Illustrated Travelogue.
What are the things you like to buy and keep for memory?