Four pea sized balls of Blue Tack (or the less expensive Blue stuff from Dep/Dap, can't rememeber the spelling).
For a glue like bond "cheap" vanilla ice cream will work (stick a quarter down to the floor with it, let it dry, and you will see what I mean:-).
For a glue like bond "cheap" vanilla ice cream will work (stick a quarter down to the floor with it, let it dry, and you will see what I mean:-).