Kender? Very Dissatisfied.
"Give the Kender back a 'magical pocket' and simply indicate its up to the player how items get there. It doesnt need to be magical, LET THEM BE THIEVES."
I don't get the hang up on Ace/Pockets. It was novel as a racial trait, but it's not a defining feature of the kender race's mechanics in 2e or 3e according to official sources. Kender in 2e were basically halflings with taunt, fear immunity and better thief skills. in 3e, they were likewise halflings with bonuses to bluff and thief skills and immunity to fear. The current kender has the exact same features: taunt, fearless, and a bonus rogue skill. While Ace was an interesting idea, it was never part of a kender's kit of core racial abilities.
If you want to simulate the Ace ability, make kenders who walk through any suitably large community roll 1d4 trinkets off the trinket table and be done with it.