The business of kitniyot has been far overblown. The joke in my home is that it’s good the Hayei Adam didn’t succeed in assuring potatoes, since then Ashkenazim would starve on Pesah.
Seriously, though, I actually stock up on Oberlander cookies/rainbow cake, coca cola, pasta, and walnut oil for Pesah since walnut oil year-round is ridiculously expensive (Pesah walnut oil is cheap) and it goes well in vinaigrettes; Pesah coca cola is made with real sugar and is a far superior product. And I like the novelty and convenience of making a shehakol on cake.