Provided herein is an apparatus and system to increase the capacity for grasping or engagement of an object using an accessory tool. Methods of increasing the capacity of a tool can include: engaging an accessory tool with a tool, where the tool includes a first vacuum cup and the accessory tool includes one or more second vacuum cups; securing the tool to the accessory tool with a securing mechanism; drawing a vacuum through the first vacuum cup, where the vacuum is drawn through the one or more second vacuum cups in response to drawing a vacuum through the first vacuum cup while the accessory tool is engaged with the tool; and grasping an object with the second one or more vacuum cups in response to vacuum drawn through the one or more second vacuum cups and the one or more second vacuum cups engaging a surface of the object.