I'm envious of my kids because they just hang around the house all day doing nothing, but I think it's a waste of their time.
この場合、次のような言い方ができますよ。
ーI'm envious of my kids because they just hang around the house all day doing nothing, but I think it's a waste of their time.
「子供たちは1日中家でごろごろしていて羨ましいけど、時間がもったいないと思う」
to hang around the house all day doing nothing で「1日中家でゴロゴロする」と言えます。
ご参考まで!