This is the most simple, cheapest, easiest advice to follow.

Good advice.  REALLY get into it!

It's good to have a routine as you train him to be submissive.  Serve you, attend to chores, obey your every demand and wish, and humble himself before you.

I think part of our job is to keep our submissive occupied (out of trouble) and humbled.  One practical way, is to do the most mundane tasks with him muffled beneath.  Its not all that wild sex stuff.  Just a simple lesson that he is just there to be beneath you.

You can be more discrete and zip his caged cock inside his pants.  Leave just enough room to fit the leash through his pants zipper, and you can guide him around.

Mix cute, innocent, mild appearance with harsh, dominant, controlling behavior.  It will convey that he must always be ready to submit, despite appearancss

If your man has a "man cave", that's ok...  But peg him in his man cave...  Periodically... So he can be reminded of that while he is sitting in there.

Any cock cage is functional and will accomplish all you need.  A pink one, though, helps drive home your dominance, and his submission.  Um...  He won't be messing around with the ladies at work.  ;)

Long nails are great tools. - reaching into cock cage openings - tickling and teasing his balls - digging into his back or buttocks - they just look wicked!    

I love going to the Pool.  Leave his cock caged and wear your best bikini.  Male trunks are so thin...  It's so easy to accidentally brush against his caged cock...  And oh how much I find I need to rub my tits together and moan a bit.  Not sure why that bothers him so much.  ;)