That is a cute story, Twink!
Caspar sounds like Weezie! She fetches like mad, only she
does it with black twist-em ties! Sometimes other colors too.
I found a metallic one yesterday and showed her and got a BIG
SQUEAL of delight! Bling Bling!

There is a toy called the ZipShot...it shoots soft discs. Available at Amazon.com
Our cats also love it, esp, Houdini. He is only 6mos old.
Oreo loved it back when she was younger. But she is also now
reliving her kitten days, with Houdini and the discs. Weezie is still watching.. they are too fast for her we think. We shoot it into a corner so it can rebound around. Houdini catches them now in mid air, and then carries the discs around the house!

Some cats are fetchers, and some not. We've only had one other cat many decades ago who fetched. Weezie fetches 100%.
Houdini watches her, but still only brings back the discs 1 in 5.
Weez only fetches her twist-ems. But upNorth last summer she caught a frog at 2am and brought it into the bedroom...it was screaming an awful sound and woke us up. I didn't know frogs screamed!I had to net him and take him back to the lake. We keep a net handy (like a butterfly net) because Oreo brings in live things too. Sometimes Oreo takes her prey to the bathtub!
ick ick.