Most "sauna gifts" are novelty items that end up in a drawer. These are the things Finns actually use, every time, in their own saunas. For each one: why it is worth giving and what to look for so it lasts.
Sauna hats waiting on their pegs.
Small gifts and stocking fillers
Things every sauna-goer uses, at a small-gift budget.
Wool felt sauna hat
Finns wear a felt hat in the sauna to keep the head from overheating while the rest of the body warms up. It makes the top bench more comfortable for longer.
Look for: 100% wool felt, no synthetic blend, loose enough to sit lightly on the head.
Sauna scent
A few drops in the löyly water bring the smell of birch, pine or tar to the room.
Look for: Scents sold for saunas, mixed into the water in the bucket. Never pour a concentrate or an essential oil straight on the stones.
Dried birch vihta
The Finnish birch whisk. A dried one brings summer into a winter sauna after a soak in warm water.
Look for: Dried or frozen birch whisks from a sauna shop. Or give the know-how and make one together next June.