It's 10:15 and my 3 year old is still getting out of bed

I've pondered getting a lock and flipping it around to lock him in his room.

I've pondered if they make cages to go on top of twin beds.

I've pondered putting him back in his crib.

Meanwhile I'm trying to get work done so I can go to bed. He is going to be so tired by the end of the week because instead of going to bed at 7 he's going to bed past 10three nights in a row.

Any tips for making a three year old stay in his bed?