How to patch carpet holes due to office chair casters?

[Rollerball]

A small area of carpet in my office at home (only under and around my chair) is becoming extremely threadbare due to years of use from my feet and the chair casters - not only that but two holes have appeared, one even goes through the underlay and has exposed the concrete floor. Each hole is about 2 inches in diameter.

Unfortunately I just cannot afford to have the whole room re-carpeted, so what is the "best" cheap option? I could just slap down a rug or a mat but if I do that I'll no doubt end up tripping over the edges, so is there a recommended way to patch the holes?

 

[Tigercubrider]

It will probably show but stealing some good carpet from under a cabinet or behind the desk may help. Insert a patch then buy an office chair mat suitable for carpet

 

[foxhole]

https://www.ebay.co.uk/i/3810697788...3D710-134428-41853-0%26rvr_id%3D1460324011440

 

[Rollerball]

Thanks for the suggestions.

 

[crazydaze]

Thanks for the suggestions.

Or replace the lot with carpet tiles yourself.