it's okay to be protective of your little fur babies. yes they are fragile and can get into unsafe things.
have you tried using a large bonding pouch that you can carry around during the day while they sleep? they will get used to being around you even more.
for the toys and treat......you are right to be very cautious but you can simply go on to suncoast sugar gliders and order some of the "natural treats" or mini yogurt drops for your babes. this is where I get all of my treats. a favorite here is dried coconut and mini yogurt drops. if you are worried about toys being unsafe, I suggest going on to "thesugargliderstore.com" and order some toy parts. I just ordered some plastic chain and little plastic pacifiers, rings and plastic connecters. you can make the toy anyway you want and you can make sure the toy is safe:)
if you are worried about making it unsafe then I suggest searching online for handmade toys. but it's more expensive!
if you put your gliders in the bonding pouch during the day, you won't disturb them too much. as long as they get at least 4 hours of sleep during the day (undisturbed) then they will be fine:).
worrying is good because we want the best and safest environment for our babies, but too much worrying is not good, you don't want to be stressed:) I don't blame you though, I'm a clean freak too.lol I always recheck the bathroom before bonding for anything unsafe that my little ones can get into.