My mom had her birthday and we (me and my son) made a small cake for her. Basic chocolate cake with chocolate frosting (from chocolate powdered sugar) and marshmallow fondant. I dyed it with purple Wilton food colour I ordered online. I added some chocolate candies to (try to) hide the uneven bottom. Again quite sweet but my mom loved it (she was in tears when she saw it, I hope because it was a surprise for her) and that’s most important.
ps. one of the top ideas I’ve lately had was to buy a small cake tin. I can experiment without needing to eat so much cake!