Instead of a spare table, have you considered a kind of vendor's tray you can carry in front of you. Would give you some independence...
Yeah, I have a vendor's tray, or more like a wooden 'basket'. As for the table I need it for creation - some kind of laboratory - not for selling purposes. Meanwhile Jupp contacted me that we can share a table - thanks for that -, so we will do that. Thanks for the advices, guys!