Is their a good way to put these tools back to work and still have conveince of portability from beyond the home?
Yes and no. Most storage cases these days are blow-molded, with the lower end tools using cases with living hinges for the rear of the case as well as the closing latch. You higher end cases often use seperate screw or bolt on hinges and a 2 or 3 piece latch that is far less likely to wear to the point of breaking.
For tools that come in sets, I usually transfer over to a rolling or big box and pitch the cases. For service sets I keep in the car (a'la Blue Point) , they don't see enough use to worry about hinge failure.
For cases for my small floor jack as well as a couple of bit cases ans micro screwdriver cases, I found the locking latch fails before the rear hinge. For small cases , I just purchase lengths of velcro, sew the hook and loop end to end so that as I wrap it around the case it forms a loop and locks the lid shut. Modified old style bicycle pedal clip straps also work for this.
For biggers cases, if the reear hinge breaks, I usually take a piece of tooling leather and cut it to length and pop-rivet it to the top and bottom pieces (use washers) and that re-creates the full length hinge but in leather.
For the front latch, I reinforce the velcro with leather, then pop rivet loop side on to the top lid and and hook side onto bottom lid. Leave long pigtail on top lenght so it can be pulled down and grabbed by the bottom velcro piece.
A piano hinge pop riveted to recreate the rear hing may work but my require some shimming.
Retrofitting an older front hinge and pop-riveting on is a little easier.
The goal is sturdy and keeping things closed so your tools don;t go flying .
If you are looking for exact replacement boxes new from the mfgr., due to a lot of changes in tool design and quantity and type of tools sold in sets, I;d be hard pressed to believe you'd be able to find one unless it's a relatively new set. That's why I suggested repair first, then start to look for a general service box that will fit what you have.
Good luck