Chair, as pre-cluttered, is deco-only. Normal version will came with the next part of series. Now about hanging flowers... They are 3-in-1 objects - you can place each of them at 3 different heights. And as you see, they do not need wall support, so you can put them on fake walls, fences, square columns etc. Base by Raeven @ Secret Society of Woobsha, modified by me.
[upd]: Folks, I'm sorry, but in hurry I forgot to mention, that those hanging pots and lantern may spoil the view of your lot on a Neighborhood map, if you do care of such a thing. Personally I'm not, but if you want them to be fixed for this - let me know. If there will be more than ONE request - I'll re-make these items.