Here is my remix of this stand, you can use up to 8pcs of 2 Euro coins as weights, total of 68 grams.
You might need use a bit force and tools to get first coins in (i did push with screwdriver), no tape / clue needed there!
(Due tight fit, there is no way to get coins out without excessive violence or breaking stand for good! So, don't spent your last coins there :)
Holes are sized that even with 4+4 coins, they don't protrude, so stand sits firmly on your table.
Mount dock to stand with double sided tape or dab of (hot) glue, i suggest tape.
You may play with your settings.