Items are as strong and as fragile as glass. If you take good care of them and prevent damage, they will be grateful and stay trusted, life-long partners.
Even oiled or waxed, wood doesn't like humidity, big temperature differences and sharp household ojbects.
Items may get darker in color with age.
A dry towel is, often, good enough to clean. One can sometimes use oil or wax to get the shine back. Concerning allergies, avoid walnut oil.
I'll give you customized advice for maintenance, by item. Don't hesitate to contact me for advice!