Detachable bottle and food holding subtrays, clips and support attachments for juvenile chairs such as highchairs, strollers, booster chairs, car seats and activity chairs. The clips can be a snapable C-shape, use a screwable post or a spring biased post for attachment to an existing tray. Removable lids and removable bottle sizing rings can be used. Pre-attached clips can be pre-molded directly to the existing tray. Alternatively, clips can be attached by hook and loop fasteners or peel and stick tape. A drawer type subtray can slide in and out from the existing tray. Alternatively, a pivoting arm can be folded out from the existing tray. The clips, supports, drawers and arms can be used to support and/or hold items such as food out of reach of sitting children, and/or can keep items such as mirrors and toys at selected locations within reach of the sitting child.