There is a place to make soap in Ledi-1 building.
There is a place to make pottery in Qingliangshan Park.
There is also a pottery bar in Nanjing, which specializes in pottery. Handmade pottery DIY workshop address: Building 8, Creative East Zone, No.6 Guanghua East Street, baixia district, Nanjing-1Road, take bus No.25 and get off at Lan Qi Street Station.
There is a chocolate salon on the first floor of Xinbainegative, just behind the aftertaste, just across the street from Ajisen's chocolate. If you choose the pattern he made, it will take about 35 steps, plus 20 manual fees to make it yourself.
I am a student, too. These things you said are already quite expensive ~