Very settled, don't want for a great deal in material terms, own their home and loads of nice stuff in it so no obvious need for typical wedding presents and I don't think they would want that.
Want something which is significant for both of them and something which is appropriate for a wedding but they aren't making a fuss of the wedding; it's a small civil service. I don't think they'd like anything obviously commemorative or "weddingy" if that makes sense ie crockery or jewellery. They are big readers, outdoorsy. Neither particularly materialistic. Two kids approaching teen years.