Wear gloves during this process and thoroughly clean the toilet and surrounding area afterward. If the clog is caused by a hard object (like a toy), this method will not work and may require a plumbing snake or professional assistance.
Stretch a layer of cling film tightly across the top of the bowl. Press it down firmly against the edges. how to unblock a toilet with cling film
Wrap tape around the perimeter to ensure an airtight bond. The seal must be perfect; any leak will dissipate pressure. Wear gloves during this process and thoroughly clean