Get a set of velcro
A ball of blue tack
Cover the throwie with blue tack, and wrap it with the hook side of the Velcro facing outward.
---Making the retriever----
Get a flat floor mop
Glue the Velcro (furry side) strip to the mop
Thanks for reading this little idea of mine.
If anyone has the time, can they post another tutorial(With pictures), using these ideas above. Because i like to see this adopted widely.