(1) No talking during time out. That’s why it’s time out.
(2) No fun things in time out. That’s why it’s time out.
The purpose of time out is to separate the child’s inappropriate behavior from reinforcement. By reinforcement I mean anything that will make the problematic behavior continue. You talking. Fun shiny objects. TV. A sticker on the wall. If these types of rewarding things are available during time out, the time out then becomes an okay place to be. Or maybe even fun.
Use a timer instead of a glitter bottle. Any timer, clock, sand timer, etc. Just make sure it is not fun. Keep it plain and ordinary. And save the homemade snow globe for play time.