Can anyone here recommend garden plants and flowers for my lawn? I really have no clue as to what plants to buy. :)

I love to have an herb garden, too! If you have a bigger lawn, I suggest you get some kalamansi, sili, oregano and other seeds like that. I have a friend who has her own garden and she'd just pick from there whenever needed. You can get yourself citronella, too! Safe against mosquitoes :)