I picked up the variety kit for my son. I believe Amazon had it but they seem to be sold out. Best Buy is still shipping them for now, might change later to in store only when they run out.
Variety Kit
https://www.bestbuy.com/site/nintendo-labo-variety-kit-nintendo-switch/5234621.p?skuId=5234621
Robo Kit
https://www.bestbuy.com/site/nintendo-labo-robot-kit-nintendo-switch/5234620.p?skuId=5234620