Over the years I have been asked several times if I can build a Home-Start Volunteer Diary form online. To do a one off is prohibitively expensive, and I have not bothered to look at it in any detail in the past.
I have had a recent request, and based on my experience using Contact Form 7 and the layout manager plugin I have built a demonstrator. You can try this form out for yourself. It will send a message back to your email address with up to 122 different items of data formatted in an email.
You can locate the page here: https://wingrove-media.uk/vol-diary/
If this is of interest to your organisation (most likely a Home-Start) then please send me an email letting me know, and I will keep you in the loop as it develops.
There is already 6.5hrs work in this form and over 870 lines of code. It is outside of mainstream website development and maintenance, but if there is significant interest, I can share the development cost across multiple organisations which would make it more attractive as a development project.