YouTube video ideas like the janoskians and O2L?

I'm obsesed with O2L and the janoskians! If you don't know who they are you should look them up! They are hilarious! I don't have any fancy camera though. I just have a little NIKON camera. I don't know how to tell what style it is though lol.anyways i've tried diferent public prank vids and it was So hard to get good footage! I ended up deleting everything! Any ideas on filming also? Ok so do you guys have any video ideas? I want some sort of public ANYTHING really. As long as its not too complicated for a beginner filmer, and not TOO crazy.(i'm not at that level lol) I LOVE the pranks the janoskians do! Eventualy i want to so them too. So any ideas? Also what are some good challenges?

You can start off by doing cinamon challenges at home with your friends and stuff lol. Here are a couple challenges i know about:
chubby bunny challenge
shotgun challenge
salt and ice **i don't recommend this at all! Some people ended up in the hospital with major injuries for doing this**
saltine cracker challenge
death shake challenge