Ask your nearest government hospital specifically
Any form of alcohol, even just a glass of wine is acidic and can erode your teeth
According to ETIAS Visa Europe, Brits returning to the UK via air or sea travel have the following allowances on 'restricted' items: 200 cigarettes (or 100 cigarillos or 50 cigars or 250g of tobacco) Four litres of still wine and 16 litres of beer and one litre of spirits or two litres of fortified or sparkling wine Other goods up to a value of 430 per person The thresholds are reduced for non-EU citizens travelling by rail or road
Kool, Newport, Marlboro, and Lucky Strike have emulated this newly introduced and rapidly growing product category.
You could put a fuse in an unused slot assuming it has the contacts in there, but you mentioned you may not want to enable whatever feature that fuse slot may be used for
A pre-mix of cigarette butts, water, and soil, would allow manufacturers to make different kinds of bricks with varying percentages of butt-content
