help me come up with at least three ideas

hi guys, can you help me come up with at least three ideas for this? In addition, listing the stakeholders for stakeholder analysis would also be much appreciated. Pls refer to the attached file for more details. The idea should be of a 1st year engineering student. The playset must not be too complicated and easy enough to make for someone with VERY BASIC knowledge of CAD (as we will have to use CAD to make the parts). I’m having a mental block, cant think of anything interesting and out of the box. In addition, listing the stakeholders for stakeholder analysis would also be much appreciated. Pls refer to the attached file for more details.