Perhaps you wonder "Where do you put all these scuba gears, preserves, life jackets and all other things that can come in useful during the border crossing?" We have already mentioned the backpack (the one in which border guards can find a boat - and this is a direct road to the dungeon). But there is more.
The perfect set for crossing the checkpoint is a briefcase, diplomat or ladies' bag. Combine with a strict suit and dress, and here you are - on the other border side.
If the things you need fit neither in a briefcase, nor in a diplomat, then probably the thing is, your path will lie through the forest, river, or mountains ... Of course, the tent can't fit in a ladies' handbag, but a fishing or tourist backpack is perfect, and also there are a place for sleeping bags, bog shoes and maybe something else.
A pair of sports bags in your arsenal doesn't attract the attention of border guards, but it doesn't arouse trust either, so carry them carefully.