if grounding them is torture for you.
make them run laps instead.
I normally give my kids a choice of their punishment.
For example my son gets to choose if he loses electronic usage for a week (or more depending on the infraction: no tv, computers, tablet, Wii, etc) or cancelling a fun outing we had plan
or a bunch of other punishments I have but I only give him two options to choose from
the two that I think I can enforce the best.
I also tell him if he refuses to choose then he gets the priviledge of doing both or not doing both as the case may be.
sometimes I modify their punishment because I tell them its not working for me and if they object, i say I can always add to it.
other punishments:
no desert/ candy
no playdates with their friends
no movies/ eating out
timeout
removal of toys (this is done when they fight over toys)
running laps
writing sentences or letters of apology
cleaning up the mess they made (which is just expected not really a punishment)
anyway God bless and hope tomorrow goes better for you.