Any advice on riding/staying/renting a bike in Mallorca?

just curious for those that rented a bike..

what did you bring with you?

I’m thinking shoes / pedals / your bike clothing is obvious and easy.

what about lights? tools?

helmet (that is gonna move me from a backpack to a piece of luggage (not a huge deal but would rather not I guess if I can rent one)?

do you have to bring water bottles?