The Drawer of Misplaced items. Jitter Jumpers, #32

Thirteen-year-old Seth has always felt like an outsider in his own home, navigating a "territory populated by giants" who don't understand his maps. But when his personal belongings start vanishing only to reappear in the most improbable places, Seth realizes he isn't just dealing with his sister Wendy's usual eye-rolls and petty thefts. There is a "malevolent energy" gathering in the shadows of the junk drawer, a manifestation of every rejected thought and unwanted feeling Seth has ever had.
To reclaim his life, Seth must confront the "Drawer of Misplaced Items" and the secrets it's been keeping for him.