LBoxx Label Hooks

I really love the Bosch L-Boxx labels from @danielmueller_142228 and  @CHSI_416631 that I use extensively for keeping my L-Boxxes organized.  Unfortunately only the two small Bosch L-Boxx versions (102 and 136) offer the necessary “hooks” to attach the labels to the boxes. I also use some bigger 238 and 374 versions which do not offer a way to attach the labels. I therefore designed a really small addon which can be glued to the front of the bigger sized L-Boxxes and hold the labels fo