welcome and good luck with the move...
The smaller items you mentioned will be on something like a 12-15-14-24 DC volt suppy transformed down from the AC 110 US or 230 V european main suppy. via The transformer (Brick) as you called it....
you could repurchase the transformers here (if available) for each appliance.....depending on the supply/maker...
It's quite a large jungle out there with cables adapters etc...not impossible but you will have a few headaches getting it all sorted...
all the best