Cryptic crossword No 1,479

This is day 8 of our advent calendar. The rest can be found here. https://www.dropbox.com/scl/fo/4esbtad9w79qrkoqqtqt6/h?rlkey=73jiloqoc24lot8tuhumf4svs&dl=0

What a delightful way to start the day - thanks for a lovely puzzle guys! Just the ticket to warm up the old grey matter before work, with some very neat constructions and inviting surfaces, particularly 1a (satisfying), 4a (neat), 12a (nice def), 18a (neat), 26a (neat), 2d (fun), 3d (lovely construction), 15d (cute) and 19d (neat)

Thank you Potoroo. An enjoyable and well-constructed puzzle, particular favourites being 18a (once I had worked out the very clever device), 25a, 5d (especially good surface) and 7d.