It's not exactly the *best* way to do it, it's just a way that's possible.
(in no particular order) Good variety curios to keep stocked: Wood Choppings, Stray Chestnuts, Grass Whistle, Rock Maracas, Smooth Stone, Brain, Devil's Wort, Stringy Sinews, Rainbow Scales, The Last Elusive Bone, Spinning Top, Simple Crucifix, Seaweed Mask
Unless things have been changed around, you tend to get these fairly easily or they're cheap to make. That's 13 variety curios, and assuming no overlap that allows you to get 10.8x the inspirational value while never using the grinding curiosity at less than 70% efficiency.
Ah, spinning tops have been nerfed into the ground since I used them. That would only get you 2700 nat phylo (and that's ignoring the fact that spinners are a variety curio here). Tumbleweeds and Min surveys are probably your best bets.