L.A.
We held our grandson alot when he was little as well and found he wouldn't sleep unless we held him. Our solution was a really nice backpack from REI. Since we owned our own retail business, Grandpa put the baby in the pack and worked with him on his back, pretty much all day. Baby loved it because he was held and it allowed him to look around. When he got tired he put his little head down on Grandpa's shoulder and went to sleep. There was also a head support on the pack for use when free standing. The pack we chose had a strong frame which allowed it to be placed on the ground with baby in it. Sometimes he would take the pack off and baby would sleep for 1-2 hours completely undisturbed in the pack. A little unconventional, but baby was happy and Grandpa could get work done without the extra load for a little bit.
I hope this helps.