Peg Puller

good idea. 👍

'Tis indeed a good idea. I saved myself the extra expense, time and mither however, as I'd already invested 10p (at a boot sale) and purchased a claw hammer which also proved very effective at knocking the pegs in. 

We carry a regular joiners claw hammer in our van's kit which I use for knocking in steel pegs. Like the original poster, I used an angle grinder to open up the normal nail sized slot in the claw to a peg sized slot. It works perfectly well and cost nothing as I already had the hammer.    

An unmodified claw hammer fits my pegs OK.

Big hammer or small pegs? 

Another vote for small claw hammer - no need to modify in my case, perfect.

Likewise, a claw hammer does the job for me and of course it knocks the pegs is as well - with a little help from my right arm!

Medium sized hammer, rock pegs.

obviously people do use a 'normal' claw hammer but IMHO they're not big or heavy enough to knock a peg into the ground, especially hard/stony ground. I use a 4lb lump hammer to knock them in instead. I made a puller years ago but lost it, so in the mean time pegs are removed by a few knocks side ways & pull/hook them out with AN Other peg.

I've bought all sorts of peg pullers over the years, ranging from the bent, thick piece of wire with a handle version to the all-singing, all-dancing telescopic one that saves you having to bend down.  The former invariably straightens out on first use and the latter was absolutely useless and pulled apart after a few uses and never worked thereafter. Another £15 wasted. They both sit amongst that pile of junk in the garage that I keep meaning to take to the tip!

I now rely on my trusty claw hammer, but like ED, favour a hefty lump hammer for bashing the rock pegs into hard standings.