U can try to make a volcano and one of the expirements which im going to suggest u is in the field of chemistry.
-----take a boiled egg and a glass jar whose opening mouth should be smaller than the size of the egg so that the egg wouldn't fall inside the jar just by keeping it on top. Now remove the hard outer shell of the egg and light a match stick and and throw it into the jar and quickly keep the boiled unshelled egg on the opning of your glass jar and u will find that the egg falls into the glass jar in seconds.
---its a very simple expiriment and hope it helps u. if its usefull mark it as the brainliest answer. ;-)