What did your bassinet look like?(set up)

I’m a FTM and don’t know how to set up my bassinet properly.. What I mean is that I know some people just put a fitted sheet, others put a SnuggleMe/DockATot in the bassinet.. I know ur not supposed to have like blankets or stuffed animals because it can be dangerous??

Could I also use a thick/padded sheet and tuck it in the bassinet so the baby can be more comfortable and not so flat?? I don’t wanna do anything that could be bad for my newborn!