Every week a Guardian Money reader submits a question, and it's up to you to help him or her out – a selection of the best answers will appear in next Saturday's paper.
This week's question
My daughter is getting married next summer, and instead of a conventional wedding list would like to invite guests to contribute towards buying roof-top solar panels. Is it too unconventional to be acceptable? What other 'green gifts' would readers recommend?
What are your thoughts?