[header] How to build an indoor fort [title] Make this fort at the end of your bed. [step] At the end of your bed, tape a sheet or blanket to the frame. [title] In the middle of the sheet/blanket, put a high but sturdy object such as a standing lamp or, even better, a bar stool. 
[title] Put two similar height low objects such as upright standing suitcases. [step] Tape or use a clothespin to hold the sheet/blanket on.