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(idle) curiosity; fancifulness; whimsy; (having) strange tastes
こんな辺鄙な場所に来るとはもの好きな人だ。
You must be quite eccentric to come to such a remote place.
もの好きにも彼は古い機械を分解して調べていた。
Out of sheer curiosity, he was dismantling and examining old machinery.
もの好きな性格が災いして余計な仕事を引き受けた。
His curious nature worked against him, and he took on extra work.