If fitting new grips use a quick squirt of Hairspray as a lubricant/adhesive and actually the cheaper the betterLittle order from PX. 2 x 50p end caps for my 3TTT Status stem on my Ribble - just as spares - The original cap cracked years ago, and was glued. PX had some so I bought 1 a year or two ago. They've got them again, so I've got a couple for the spares bin, in-case the new one cracks at any point - the stem is no longer made.
Also a tool holder 'bottle pack' - come in handy for the bits and bobs in my panniers. 1 x set of lock on grips - my commuter grips start to rotate in the wet - time to change. None of the bits were over £4.99 and the total order was £27, so I've got something else that I've forgotten about !