Can I use one as a coffee table?

Many people use them exactly this way in modern living rooms. The flat top provides plenty of space for trays and books. Just ensure the height works with your sofa. Some sit quite high, which might make reaching for your cup uncomfortable.

My grandmother left me an old wooden chest and it smells quite musty inside when I open the lid, how do I get rid of that damp smell?

Leave the lid open on a dry, breezy day to let fresh air circulate. This simple step clears most stale odours from old carcases. You can also place a bowl of white vinegar or baking soda inside for a few days with the lid closed. They absorb lingering smells without harsh chemicals. Wiping the bare interior timber lightly with a dry cloth removes surface dust. Don't soak the wood with wet cleaners, as moisture causes the mustiness in the first place.

Will the heavy lid trap fingers?

Yes, solid timber lids carry serious weight. You can fit a modern friction stay inside. This controls the drop.

I want to put blankets inside but the wood looks a bit rough in the bottom, should I line it with sticky paper or something else?

Sticky plastic liners leave stubborn residue on the timber and trap moisture. This often leads to mildew forming beneath the paper. They're much better off with loose fabric liners. Simply fold a clean cotton sheet into the base before stacking your textiles. Some people cut a piece of acid-free card to fit the floor. It lifts out easily when you want to dust and protects your fabrics from rough splinters.