I've used the 32 and 64gb sandisk ones (https://www.amazon.com/Sandisk-128GB-Flash-Memory-Drive/dp/B00KYK2ABI/)
Chroma Cables
1/4inch headphone adaptors
USB drives
Earplugs
iTunes Giftcard
Here's mine https://www.amazon.com/SanDisk-Ultra-Transfer-Speeds-SDCZ48-064G-UAM46/dp/B00KYK2ABI