If it's just digital devices, (not power tools and items with motors in them) for short periods of time then you can skip the earthing.
Keep in mind that there will be no fault protection in this case.
Nevertheless, the devices you mentioned are more suited to be running on a ups, because...
I've had friends from neighbouring countries who completed their in service training in South Africa. They had a little more trouble finding the ist than us locals however they did complete their studies. Perhaps i could ask them how they did it you'd like me to ask..
Yes, I'm currently using it to manage my emails..
It unsubscribed me from 40 mailing lists.
And has a daily summary/rollup of another 32 mailing lists.
Before unroll.me , I would use filters to handle each mailing list but at some point it became too much to handle.
It does a great job...
SweepSouth.com has a referral program which can be "used"
SweepSouth is a rent-a-maid style company which charges R38 an hour for a maid.. The minimum booking time is 3 hours and with a referral code you get R100 off your first booking. The person who refers you gets a R100 takaelot voucher...