You can't really see them that well in this picture, but I just used a variety of boxes (from Suite Trunks, and from Parlor Knick-Knacks) to represent 'packaged' presents. The Dunmer boxes from Morrowind and the Alinor/Scrimshaw ones from Summerset are especially nice imo, they come in a variety shapes and sizes. It's a pretty basic and unimaginative 'present' pile, but it saves slots which is always the issue I run into when trying to make detailed builds - especially in the larger houses.

The Figurines from Summerset make nice presents too, like a toy unicorn or toy gryphon or other stuff you may find under a family's Christmas tree. Pearls from Summerset and Balls of Yarn can also make nice miscellaneous presents, and you can put down some Fabric piles for a splash of colour or to pretend to be Christmas sweaters or something.

If I had slots to spare I would have probably use 5 of these to 'construct' more traditional Square-shaped wrapped presents (would have looked like a square box wrapped in pink wrapping paper), but that would've been way too many slots and wouldn't have given me the variety of shapes and colours that the regular box furnishings did. Anyway, I'm sorry that I can't suggest a more creative solution, but good luck with your hunt for finding some items that could work as presents!