Lavender incense, candles, the flower itself. Anything, personally we did all three, but that's because I LOVE the smell of it. But yes your cats (from my experience alone) will be very clingy and affectionate, enjoy it! I miss having my babies in bed with us but now that the issue is taken care of they are having more fun being with each other and tramping through the house like only cats can. They will be really sweet and try to make you as "safe" as they can in their eyes. They are doing what a loyal dog wishes they could do but in their own way.