Double Sided Tape
We use Double Sided Tape as a means of attaching components in our kits. In our workshop we tend to use Hot Glue for the same purpose. Since we're not sure if everyone has a hot glue gun we use this tape instead. The tape we use comes in small squares that you can peal off individually.
Where We Get It
We get our double sided tape from U-Line: https://www.uline.com/Product/Detail/S-10531/Double-Sided-Foam-Tape/Pre-Cut-Double-Sided-Foam-Squares-1-32-thick-1-2-x-1-2