It'd be nice if this had a general equivalent of Return for Refund (Maybe one return every 30, 50 or 100 years to keep with the theme of the general version being weaker?) Just because NOT having it forces you to be picky about your chosen bound items.
Bigger is better, Dominion, Astral Projection, Physical Projection
Physical projection basically being the thing that changes this from an awful fate to being awesome. Since you can just pick a world or two you like to 'live' in spend your days there and you can mostly have a normal life if you want. Get a room or locker for your possessions, etc.
Lingua Populi- Need a communications perk when world-hopping, Telepathy might technically be more versatile; but It'd be inconvenient if you want to buy an ice cream cone but the clerk is too busy freaking out over having words beamed into their mind to actually serve you. This is more low key.
One Time Makeover- Would buy full shape-shifting if it were on the menu, but it's not.
Gift of Gab- Offsets some of the general drawbacks of only having 10 hours per day on world. Talk my way around needing money or identification, etc.
Orange gem, Green gem
My Precious X 7
Eternal Juice X 4
The Weight of Love X 2
I don't need the superpower stuff since I'm going for comfy. I only get seven possessions so I need to make them count but I should be able to find 'perfect' ones by searching through enough magitech worlds and maybe even get around the lack of a refund ability by using enchantments or transformation magic on them. But some of the stuff I'll go for:
A weapon. Likely some kind of magitech gun with multiple settings for different attacks/projectiles.
The single best portable personal computer/smartphone I can find, will hold out for something with some kind of magical omni-port that can adapt compatibility with any other world's standard connection ports.
An autonomous android servant with full AI. (No companion rule circumvented!)