I wish I could spend a day with my 8-10 year younger self.. just play nostalgic vidya, remember some times and watch me meet with my old friends, build another bridge to our favorite tree that was seperated by brooks, maybe build a dam as well, explore the forest - high grass tracts, snap some "bamboo" plant from that spider infested ground..
Life and world was straight up magical back then and I'm glad I spent only ~33% of it playing vidya on computer.