When I travel (well, not just when travelling, I admit) I don't get though 100 needles in a year, let alone 17 days, which makes my kit considerably less bulky. One bit of kit that is useful is a needle chopping device eg BD Safe-Clip. Once disarmed, needles still need to go in a sharps bin (or at least temporary secure container such as 35mm film cannister or medical bottle with child proof lid, which can hold needles / lancets before and after use, at different times. Lancets can't be clipped (sharo bits too thick), but can use types with caps that fit differently to show whether they have been used or not.