Mimbulus mimbletonia is the plant that Neville is carrying when he arrives back at Hogwarts at the start of Harry Potter and the Order of the Phoenix. Google a picture so that you remember what it looks like.
You will need: the sleeve of a sweatshirt; felt pens – green and brown; string or rubber bands; glue; a hole punch and red card or paper – I used a box and the label from a can of tomato soup; newspaper or a magazine; Sellotape; a pot or old mug.
For full instructions
How to make a Sweatshirt Mumbulus Mimbleton