A medicine bottle, ideally with a child proof cap, or vitamin pot or film cannister [if you still have one] all work OK as holiday sharps bin.
Also, using lancets with caps that fit differently and show when they have been used mean thay you can keep a few lancets in the meter bag, which means no need for a bin - unless you change lancet every time, as recommended, of course.
I must admit I'd probably only use one or two lancets in 5 weeks, and only about 4 insulin needles.