I am not sure if this will really be spoiler answers or not but thought I better put that in the subject line.

What new furnishing items (BBQ, Lawn Chairs etc) really DO anything? I know the radio allows them to dance and bath upgrade they can warm hands....what else?

Does the tool box work?
Can they sit in the chairs?
any advantage to the bird house?
Can they cook on the BBQ?
ETC

Trying to decide if I SAVE or SPEND my hard earned money??

Thanks!