Buy a lunch on the road, etc. Begin your planning by gathering together suitable things to give away as gifts of appreciation. Police and IPA souvenirs are very acceptable, as are pictorial books, calendar's and diaries, especially of your own country. It is important to promote your home area and country. The spirit of friendship and remembrance should be more important than the value of the gift.
Handmade items are individual and usually very acceptable.
It is worth while to have your own business or calling cards printed with your contact address, phone and fax numbers which you can exchange with your hosts and other IPA members. Perhaps the most important aspect of being hosted overseas by an IPA member is the opportunity to issue an invitations to your host to visit your country. Never neglect this invitation, for if your host has been a good host, they will also be a good guest. If you go to the expense of an overseas trip, make the most of it be listening and leaning. Your host will think you are a brilliant conversationalist if you throw him the occasional question and then sit back and listen attentively.